813802

Appears in sequences

• Number of walks of length n between two vertices on an icosahedron at distance 1.at n=9A030517
• Number of walks of length n between two vertices on an icosahedron at distance 2.at n=9A030518
• T(n, k) = k^n*U(n, (1/k + k)/2) + (n + 1)^(k - 1)*U(k - 1, (1/(n + 1) + n + 1)/2), where U(n,x) is the n-th Chebyshev polynomial of the second kind, square array read by antidiagonals (n >= 0, k >= 1).at n=40A173590
• Number of permutations of 1..n with displacements restricted to {-7,-6,-5,-4,-3,-2,0,1}.at n=25A189600
• a(n) = p(0,n), where p(x,n) is the strong divisibility sequence of polynomials based on sqrt(5) as in A327322.at n=9A329011