Number of planar n X n X n binary triangular grids with no more than 4 ones in any similarly oriented 3 X 3 X 3 subtriangle.
A153553
Number of planar n X n X n binary triangular grids with no more than 4 ones in any similarly oriented 3 X 3 X 3 subtriangle.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =57a(4) =781a(5) =20279a(6) =989864a(7) =91377864a(8) =15933677137
External references
- oeis: A153553