Number of planar n X n X n binary triangular grids symmetric under 120 degree rotation with no more than 8 ones in any 5 X 5 X 5 subtriangle.
A153962
Number of planar n X n X n binary triangular grids symmetric under 120 degree rotation with no more than 8 ones in any 5 X 5 X 5 subtriangle.
Terms
- a(0) =1a(1) =2a(2) =2a(3) =4a(4) =14a(5) =16a(6) =75a(7) =552a(8) =1667a(9) =11886a(10) =186036a(11) =1025514a(12) =13006464a(13) =369745208a(14) =3793772311a(15) =86085692189
External references
- oeis: A153962