Number of planar n X n X n binary triangular grids symmetric under 120 degree rotation with no more than 11 ones in any 5 X 5 X 5 subtriangle.
A153994
Number of planar n X n X n binary triangular grids symmetric under 120 degree rotation with no more than 11 ones in any 5 X 5 X 5 subtriangle.
Terms
- a(0) =1a(1) =2a(2) =2a(3) =4a(4) =16a(5) =26a(6) =114a(7) =913a(8) =3227a(9) =25373a(10) =441919a(11) =3146641a(12) =49361868a(13) =1683721022a(14) =23850420259a(15) =734273471828
External references
- oeis: A153994