Number of 7Xn 0..1 arrays with every element equal to 0, 1, 3 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

A302640

Number of 7Xn 0..1 arrays with every element equal to 0, 1, 3 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

Terms

    a(0) =64a(1) =86a(2) =189a(3) =657a(4) =2303a(5) =8981a(6) =30216a(7) =112431a(8) =408512a(9) =1512824a(10) =5441957a(11) =20021696a(12) =73157743a(13) =268090840a(14) =977883198a(15) =3582780118a(16) =13103336584a(17) =47949599697a(18) =175342870194a(19) =641714970276

External references