53165

Appears in sequences

• Number of rooted 2-dimensional polyominoes with n heptagonal cells, with no symmetries removed.at n=6A094168
• Number of ways to place zero or more nonadjacent 1,0 2,0 2,2 3,0 3,2 4,1 4,2 5,1 polyhexes in any orientation on a planar nXnXn triangular grid.at n=8A155440
• Numbers n such that n^6+6 and n^6-6 are prime.at n=8A239429
• a(n) = 1 + Sum_{k=0..n-2} binomial(n-1,k) * a(k).at n=10A344489