Number of ways to place zero or more nonadjacent 0,0 1,0 2,0 2,1 3,1 4,1 polyhexes in any orientation on a planar nXnXn triangular grid.
A155272
Number of ways to place zero or more nonadjacent 0,0 1,0 2,0 2,1 3,1 4,1 polyhexes in any orientation on a planar nXnXn triangular grid.
Terms
- a(0) =1a(1) =7a(2) =19a(3) =52a(4) =260a(5) =1220a(6) =7357a(7) =60311a(8) =545790a(9) =5982967a(10) =83324072a(11) =1383688085a(12) =28070423509a(13) =700749741616
External references
- oeis: A155272