Number of 4Xn 0..3 arrays with some element plus some horizontally or antidiagonally adjacent neighbor totalling three no more than once.
A269292
Number of 4Xn 0..3 arrays with some element plus some horizontally or antidiagonally adjacent neighbor totalling three no more than once.
Terms
- a(0) =256a(1) =29160a(2) =1698732a(3) =87559668a(4) =4204943820a(5) =193446959076
External references
- oeis: A269292