Number of n X n 0..2 arrays with some element plus some horizontally or vertically adjacent neighbor totaling two no more than once.
A268621
Number of n X n 0..2 arrays with some element plus some horizontally or vertically adjacent neighbor totaling two no more than once.
Terms
- a(0) =3a(1) =42a(2) =1086a(3) =55452a(4) =6000978a(5) =1430057208a(6) =767057092212
External references
- oeis: A268621