Number of 3Xn 0..1 arrays with every element equal to 1, 2, 3, 4 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
A303103
Number of 3Xn 0..1 arrays with every element equal to 1, 2, 3, 4 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =0a(1) =11a(2) =77a(3) =431a(4) =2913a(5) =19393a(6) =128921a(7) =857789a(8) =5706297a(9) =37961366a(10) =252538085a(11) =1680012401a(12) =11176296913a(13) =74350419884a(14) =494616846377
External references
- oeis: A303103