66471

Appears in sequences

• Number of binary vectors with restricted repetitions.at n=13A003440
• Sum of distinct orders of degree-n even permutations.at n=30A060180
• Triangle read by rows: numbers of isomers of unbranched a-4-catapolyoctagons.at n=46A120649
• Numbers of isomers of unbranched a-4-catapolyoctagons - see Brunvoll reference for precise definition.at n=8A121145
• Number of ways to place zero or more nonadjacent 1,0 1,1 2,0 3,0 4,1 5,2 5,3 polyhexes in any orientation on a planar n X n X n triangular grid.at n=8A155336