Number of planar n X n X n binary triangular grids with no more than 4 ones in any 3 X 3 X 3 subtriangle.
A153525
Number of planar n X n X n binary triangular grids with no more than 4 ones in any 3 X 3 X 3 subtriangle.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =57a(4) =775a(5) =19641a(6) =921690a(7) =80625050a(8) =13124722225
External references
- oeis: A153525