Number of planar n X n X n binary triangular grids with no more than 2 ones in any 2 X 2 X 2 subtriangle.

A153522

Number of planar n X n X n binary triangular grids with no more than 2 ones in any 2 X 2 X 2 subtriangle.

Terms

    a(0) =1a(1) =2a(2) =7a(3) =44a(4) =487a(5) =9548a(6) =330644a(7) =20241284a(8) =2189838823a(9) =418717329192

External references