27912

Appears in sequences

• Let A denote the sequence; A is equal to the union of the self-convolutions A^2 and A^3, with terms in ascending order by size.at n=34A090845
• 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, 0), (-1, 0, 1), (1, -1, -1), (1, -1, 1), (1, 1, 0)}.at n=9A149196
• Number of generalized mountain numbers (see A134853) with n digits.at n=7A178912
• (k(n)!-j(n)!)/n, where (k!,j!) is the least pair of distinct factorials for which n divides k!-j!.at n=12A204937
• Expansion of x^4*(1-3*x^2-x^3)/((1+x)*(1-2*x)*(1-x-2*x^2)).at n=18A219755
• Self-convolution cube of A090845.at n=14A222083
• G.f. A(x) satisfies: a([n/r^2]) = [x^n] A(x)^2/x and a([n/r^3]) = [x^n] A(x)^3/x^2, for n>=1, where r^2 + r^3 = 1.at n=33A262990
• Number of (undirected) paths in the n-book graph.at n=18A307921