23717

Appears in sequences

• Numbers k such that 7!*(2k-8)!/(k!*(k-1)!) is an integer.at n=29A004787
• Generalized Bell numbers.at n=7A061696
• Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 1), (-1, 0, 0), (0, -1, 0), (0, 1, 1), (1, 1, -1)}.at n=9A148973
• Number of nonnegative integer arrays of length n+2 with new values 0 upwards introduced in order, and containing the value n-1.at n=19A211562
• Beach-Williams Pell numbers of type k^2 + 1.at n=19A212082
• Numbers n such that phi(n) = 2*phi(n-2).at n=17A258454
• Coordination sequence for (3,5,5) tiling of hyperbolic plane.at n=17A265076
• Numbers m such that phi(m) = k*phi(m-k) for some number 1 <= k < m - 2.at n=46A266267
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 461", based on the 5-celled von Neumann neighborhood.at n=32A272293