31164

Appears in sequences

• Numbers having four 6's in base 9.at n=4A043480
• Constant term of the reduction by x^2->x+1 of the polynomial p(n,x) defined below in Comments.at n=17A192749
• Triangle read by rows, T(n,k) = n!*B(n,k) for n>=0 and 0<=k<=n, where B(n,k) is the Bell matrix with generator 1/j for j>=1.at n=30A265607