39440

Appears in sequences

• Number of points on surface of 4-dimensional cube.at n=17A008511
• Expansion of e.g.f. arcsinh(sin(x)) (odd powers only).at n=4A012495
• a(n) = n*(n - 1)*(n^2 + 1)/2.at n=17A071252
• In base 3: smallest number that requires n Reverse and Add! steps to reach a palindrome.at n=26A077403
• a(n) = n * (10*n^2 - 6n + 1) = n * A087348(n).at n=16A104099
• a(n) = n*(n^2+4).at n=34A155965
• Number of permutations of {1,...,n} avoiding adjacent step pattern up, down, down, down, up, up.at n=8A177537
• Decimal representation of the diagonal from the corner to the origin of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 366", based on the 5-celled von Neumann neighborhood.at n=44A287854
• Numbers that are the sum of four third powers in exactly seven ways.at n=33A345151
• Number of edges formed inside a right triangle by the straight line segments mutually connecting all vertices and points on the two shorter edges whose positions on one edge equal the Farey series of order n while on the other they divide its length into n equal segments.at n=9A359976
• Expansion of Sum_{k>0} (1/(1-x^k)^5 - 1).at n=27A363695