Number of nX3 0..7 arrays x(i,j) with each element horizontally or vertically next to at least one element with value (x(i,j)+1) mod 8, and upper left element zero.

A230510

Number of nX3 0..7 arrays x(i,j) with each element horizontally or vertically next to at least one element with value (x(i,j)+1) mod 8, and upper left element zero.

Terms

    a(0) =0a(1) =0a(2) =16a(3) =170a(4) =1716a(5) =18588a(6) =215314a(7) =2510424a(8) =29109876a(9) =336208782a(10) =3880077868a(11) =44791093996a(12) =517189418726

External references