Number of nX7 0..1 arrays with every element equal to 1 or 2 horizontally or antidiagonally adjacent elements, with upper left element zero.
A301822
Number of nX7 0..1 arrays with every element equal to 1 or 2 horizontally or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =8a(1) =128a(2) =968a(3) =6653a(4) =47363a(5) =333335a(6) =2341241a(7) =16471479a(8) =115975709a(9) =816674776a(10) =5750906471a(11) =40498618037a(12) =285206498639
External references
- oeis: A301822