Number of 7Xn 0..1 arrays with every element equal to 1, 2 or 3 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
A302230
Number of 7Xn 0..1 arrays with every element equal to 1, 2 or 3 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =0a(1) =1172a(2) =9819a(3) =105585a(4) =2043848a(5) =32181643a(6) =553097760a(7) =9458629708a(8) =156841573045
External references
- oeis: A302230