Number of 4Xn 0..3 arrays with some element plus some horizontally or antidiagonally adjacent neighbor totalling three exactly once.
A269279
Number of 4Xn 0..3 arrays with some element plus some horizontally or antidiagonally adjacent neighbor totalling three exactly once.
Terms
- a(0) =0a(1) =20412a(2) =1365336a(3) =74853576a(4) =3719884392a(5) =174924572760
External references
- oeis: A269279