57876

Appears in sequences

• Triangle read by rows: T(n,k)=number of ordered trees with n edges and k branch nodes at odd height.at n=38A091958
• Rectangular table, read by antidiagonals, such that the g.f. of row n, R_n(y), satisfies: R_n(y) = [ Sum_{k>=0} y^k * R_{n*k}(y) ]^n for n>=0, with R_0(y)=1.at n=60A124550
• Row 5 of table A124550; also equals the self-convolution 5th power of A124565, which is row 5 of table A124560.at n=5A124555
• Main diagonal of table A124550.at n=5A124557
• Numbers k such that k^2 divides 5^k-1.at n=37A127105
• Number of tiles in distance d from a given heptagon in the truncated order-3 tiling of the heptagonal plane (a.k.a. the "hyperbolic soccerball").at n=17A290398
• Number of non-isomorphic series-reduced rooted trees whose leaves are multisets with a total of n elements.at n=6A330465
• Numbers k such that psi(k^2) = k, psi = A002322; indices of 1 in A341857.at n=41A341858