Number of nX7 0..2 arrays with some element plus some horizontally, vertically, diagonally or antidiagonally adjacent neighbor totalling two exactly once.
A268773
Number of nX7 0..2 arrays with some element plus some horizontally, vertically, diagonally or antidiagonally adjacent neighbor totalling two exactly once.
Terms
- a(0) =576a(1) =1456a(2) =17000a(3) =198114a(4) =2258084a(5) =24222418a(6) =255353744a(7) =2624246370a(8) =26623649020a(9) =266457432340
External references
- oeis: A268773