Number of planar n X n X n binary triangular grids symmetric under 120 degree rotation with no more than 7 ones in any 5 X 5 X 5 subtriangle.
A153956
Number of planar n X n X n binary triangular grids symmetric under 120 degree rotation with no more than 7 ones in any 5 X 5 X 5 subtriangle.
Terms
- a(0) =1a(1) =2a(2) =2a(3) =4a(4) =14a(5) =16a(6) =62a(7) =400a(8) =1312a(9) =8228a(10) =101575a(11) =539692a(12) =5945952a(13) =128078527a(14) =1209629759a(15) =22708191479a(16) =862913200941
External references
- oeis: A153956