102494

Appears in sequences

• Triangle T(n,k) in which n-th row lists in increasing order the values of the n-th derivative at x=1 of all functions that are representable as x^x^...^x with n x's and parentheses inserted in all possible ways; n>=1, 1<=k<=A000081(n).at n=39A216350
• Integers k such that A072473(k) = A072473(k+1) = A072473(k+2) = A072473(k+3).at n=12A255172
• Coordination sequence for (2,5,infinity) tiling of hyperbolic plane.at n=25A265068