151326

Appears in sequences

• Number of permutations satisfying -k<=p(i)-i<=r and p(i)-i not in I, i=1..n, with k=2, r=2, I={0,1}.at n=40A080013
• Base 10 integers n such that n base 7 is a substring of n base 3.at n=17A164700
• a(n) = Sum_{k=0..n} C(n^2-k^2, n-k)*C(k^2, k).at n=5A184357
• Number of (1+1) X (n+1) arrays of permutations of 0..n*2+1 with each element having directed index change -1,1 0,-1 0,1 or 1,0.at n=18A264507
• Number of (2n) X (2+1) arrays of permutations of 0..n*6-1 with each element having directed index change -1,0 0,2 -1,-2 or 1,0.at n=9A264514
• Number of n-step self-avoiding walks on a 3D cubic lattice where no step is to a lattice point closer to the origin than the current point.at n=9A366058