Number of planar n X n X n binary triangular grids with no more than 3 ones in any similarly oriented 3 X 3 X 3 subtriangle.
A153552
Number of planar n X n X n binary triangular grids with no more than 3 ones in any similarly oriented 3 X 3 X 3 subtriangle.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =42a(4) =430a(5) =7658a(6) =225975a(7) =11631356a(8) =1030701814a(9) =156452829412
External references
- oeis: A153552