Number of n X 5 0..1 arrays with every element equal to 1, 2 or 4 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
A302275
Number of n X 5 0..1 arrays with every element equal to 1, 2 or 4 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =3a(1) =27a(2) =74a(3) =283a(4) =1219a(5) =3854a(6) =14639a(7) =63093a(8) =222254a(9) =867269a(10) =3651231a(11) =13909218a(12) =55448467a(13) =230250019a(14) =911892066a(15) =3685592711a(16) =15189545391a(17) =61267056156a(18) =249395546907
External references
- oeis: A302275