Number of planar n X n X n binary triangular grids with mirror symmetry about one altitude with no more than 5 ones in any 5 X 5 X 5 subtriangle.
A153945
Number of planar n X n X n binary triangular grids with mirror symmetry about one altitude with no more than 5 ones in any 5 X 5 X 5 subtriangle.
Terms
- a(0) =1a(1) =2a(2) =4a(3) =15a(4) =38a(5) =116a(6) =499a(7) =3634a(8) =26242a(9) =291832a(10) =2965112a(11) =51213790a(12) =844607038a(13) =23147940890a(14) =598064925200
External references
- oeis: A153945