Number of ways to place zero or more nonadjacent 1,1 2,1 3,0 3,1 3,2 3,3 4,2 5,3 polyhexes in any orientation on a planar nXnXn triangular grid.

A155373

Number of ways to place zero or more nonadjacent 1,1 2,1 3,0 3,1 3,2 3,3 4,2 5,3 polyhexes in any orientation on a planar nXnXn triangular grid.

Terms

    a(0) =1a(1) =7a(2) =19a(3) =37a(4) =61a(5) =206a(6) =1719a(7) =10844a(8) =47433a(9) =196187a(10) =1471074a(11) =18683007a(12) =235351208a(13) =2409858057a(14) =25820260434a(15) =404318889964

External references