Number of 4Xn 0..3 arrays with some element plus some horizontally, diagonally or antidiagonally adjacent neighbor totalling three no more than once.
A269204
Number of 4Xn 0..3 arrays with some element plus some horizontally, diagonally or antidiagonally adjacent neighbor totalling three no more than once.
Terms
- a(0) =256a(1) =15540a(2) =471492a(3) =15289548a(4) =463790340a(5) =13753913556a(6) =399104835612
External references
- oeis: A269204