Narayana number
A surname from Punjabi.
Third-person singular simple present indicative form of dead-pan
(informal, idiomatic) To go from a standing position to a sitting one.
(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.
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