Number of planar n X n X n binary triangular grids with mirror symmetry about one altitude with no more than 2 ones in any 2 X 2 X 2 subtriangle.
A153909
Number of planar n X n X n binary triangular grids with mirror symmetry about one altitude with no more than 2 ones in any 2 X 2 X 2 subtriangle.
Terms
- a(0) =1a(1) =2a(2) =3a(3) =10a(4) =29a(5) =170a(6) =866a(7) =8938a(8) =80759a(9) =1473212a(10) =23518209a(11) =758000366a(12) =21390884981
External references
- oeis: A153909