"Narayana number" meaning in English

{
  "etymology_text": "Named after Canadian mathematician T. V. Narayana (1930–1987).",
  "forms": [
    {
      "form": "Narayana numbers",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "Narayana number (plural Narayana numbers)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
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        },
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          "kind": "topical",
          "langcode": "en",
          "name": "Combinatorics",
          "orig": "en:Combinatorics",
          "parents": [
            "Mathematics",
            "Formal sciences",
            "Sciences",
            "All topics",
            "Fundamental"
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          "source": "w"
        }
      ],
      "glosses": [
        "Any of the triangular array of natural numbers defined by N(n, k), n = 1, 2, 3 ..., 1 ≤ k ≤ n, occurring in various counting problems."
      ],
      "id": "en-Narayana_number-en-noun-yVZEcEzg",
      "links": [
        [
          "combinatorics",
          "combinatorics"
        ],
        [
          "triangular",
          "triangular"
        ],
        [
          "array",
          "array"
        ],
        [
          "natural number",
          "natural number"
        ]
      ],
      "raw_glosses": [
        "(combinatorics) Any of the triangular array of natural numbers defined by N(n, k), n = 1, 2, 3 ..., 1 ≤ k ≤ n, occurring in various counting problems."
      ],
      "related": [
        {
          "word": "Narayana triangle"
        }
      ],
      "topics": [
        "combinatorics",
        "mathematics",
        "sciences"
      ],
      "wikipedia": [
        "Narayana number"
      ]
    }
  ],
  "word": "Narayana number"
}

{
  "etymology_text": "Named after Canadian mathematician T. V. Narayana (1930–1987).",
  "forms": [
    {
      "form": "Narayana numbers",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "Narayana number (plural Narayana numbers)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "Narayana triangle"
    }
  ],
  "senses": [
    {
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        "English countable nouns",
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        "English lemmas",
        "English multiword terms",
        "English nouns",
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        "Pages with entries",
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      ],
      "glosses": [
        "Any of the triangular array of natural numbers defined by N(n, k), n = 1, 2, 3 ..., 1 ≤ k ≤ n, occurring in various counting problems."
      ],
      "links": [
        [
          "combinatorics",
          "combinatorics"
        ],
        [
          "triangular",
          "triangular"
        ],
        [
          "array",
          "array"
        ],
        [
          "natural number",
          "natural number"
        ]
      ],
      "raw_glosses": [
        "(combinatorics) Any of the triangular array of natural numbers defined by N(n, k), n = 1, 2, 3 ..., 1 ≤ k ≤ n, occurring in various counting problems."
      ],
      "topics": [
        "combinatorics",
        "mathematics",
        "sciences"
      ],
      "wikipedia": [
        "Narayana number"
      ]
    }
  ],
  "word": "Narayana number"
}