Number of nX4 0..1 arrays with every element equal to 0, 1, 2, 4 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
A303012
Number of nX4 0..1 arrays with every element equal to 0, 1, 2, 4 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =8a(1) =52a(2) =187a(3) =1047a(4) =5299a(5) =24030a(6) =123538a(7) =612923a(8) =2935811a(9) =14687358a(10) =72457509a(11) =353534815a(12) =1751242219a(13) =8627478474a(14) =42358776437a(15) =209066197468
External references
- oeis: A303012