Number of planar n X n X n binary triangular grids with no more than 2 ones in any similarly oriented 3 X 3 X 3 subtriangle.
A153551
Number of planar n X n X n binary triangular grids with no more than 2 ones in any similarly oriented 3 X 3 X 3 subtriangle.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =22a(4) =138a(5) =1319a(6) =16363a(7) =320308a(8) =9347304a(9) =395198881a(10) =24967400825
External references
- oeis: A153551