Number of 4Xn 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.
A303018
Number of 4Xn 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) =81a(2) =308a(3) =1047a(4) =4237a(5) =18513a(6) =79945a(7) =344190a(8) =1508465a(9) =6674176a(10) =29600788a(11) =131609799a(12) =587110082a(13) =2625016947a(14) =11752855152a(15) =52678292451a(16) =236333170151
External references
- oeis: A303018