Number of planar n X n X n binary triangular grids with mirror symmetry about one altitude with no more than 7 ones in any 4 X 4 X 4 subtriangle.
A153954
Number of planar n X n X n binary triangular grids with mirror symmetry about one altitude with no more than 7 ones in any 4 X 4 X 4 subtriangle.
Terms
- a(0) =1a(1) =2a(2) =4a(3) =16a(4) =56a(5) =424a(6) =2979a(7) =43547a(8) =596720a(9) =16903736a(10) =450129276a(11) =24740929636
External references
- oeis: A153954