Number of nX6 0..2 arrays with some element plus some horizontally, vertically, diagonally or antidiagonally adjacent neighbor totalling two exactly once.
A268772
Number of nX6 0..2 arrays with some element plus some horizontally, vertically, diagonally or antidiagonally adjacent neighbor totalling two exactly once.
Terms
- a(0) =240a(1) =620a(2) =5214a(3) =46312a(4) =387146a(5) =3104544a(6) =24222418a(7) =185142872a(8) =1393319226a(9) =10357051740a(10) =76224579034a(11) =556383657268
External references
- oeis: A268772