19708

Appears in sequences

• Number of permutations of length n within distance 3 of a fixed permutation.at n=10A002526
• Numbers whose base-4 representation contains exactly three 0's and four 3's.at n=28A045080
• Numbers in ascending order formed by using all the digits of the next n numbers.at n=29A081991
• Self-convolution of A004304, where A004304(n) is the number of planar tree-rooted maps with n edges.at n=7A168451
• Number of -3..3 arrays x(i) of n+1 elements i=1..n+1 with set{t,u,v in 0,1}((x[i+t]+x[j+u]+x[k+v])*(-1)^(t+u+v)) having two, four or five distinct values for every i,j,k<=n.at n=10A211723
• Number of separable partitions of n that consist of an odd number of parts.at n=41A325724