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  "body": "\n## Summary\n\nIn [[combinatorics|0JKW7W7XFR]], the **Narayana numbers** $\\operatorname{N}(n, k), n \\in \\mathbb{N}^+, 1 \\le k \\le n$ form a triangular array of [[natural numbers|0MWKJ44V5A]], called the **Narayana triangle,** that occur in various counting problems. They are named after Canadian mathematician T. V. Narayana (1930–1987).\n",
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