Number of ways to place zero or more nonadjacent 0,0 1,0 2,1 2,2 3,1 3,2 4,3 4,4 polyhexes in any orientation on a planar nXnXn triangular grid.

A155407

Number of ways to place zero or more nonadjacent 0,0 1,0 2,1 2,2 3,1 3,2 4,3 4,4 polyhexes in any orientation on a planar nXnXn triangular grid.

Terms

    a(0) =1a(1) =4a(2) =10a(3) =22a(4) =49a(5) =162a(6) =562a(7) =3016a(8) =16877a(9) =98214a(10) =637805a(11) =5164375a(12) =49219867a(13) =557800561a(14) =7204177132a(15) =106101558795

External references