Number of n X n 0..2 arrays with some element plus some horizontally or vertically adjacent neighbor totalling two exactly once.
A268632
Number of n X n 0..2 arrays with some element plus some horizontally or vertically adjacent neighbor totalling two exactly once.
Terms
- a(0) =0a(1) =24a(2) =840a(3) =47640a(4) =5419992a(5) =1328460312a(6) =725187096504
External references
- oeis: A268632