Number of 3 X n 0..2 arrays with some element plus some horizontally, diagonally or antidiagonally adjacent neighbor totalling two exactly once.
A269037
Number of 3 X n 0..2 arrays with some element plus some horizontally, diagonally or antidiagonally adjacent neighbor totalling two exactly once.
Terms
- a(0) =0a(1) =120a(2) =348a(3) =2166a(4) =9528a(5) =44760a(6) =198816a(7) =877800a(8) =3809856a(9) =16379232a(10) =69769920a(11) =295055136a(12) =1239952512a(13) =5183031744a(14) =21564442752a(15) =89355535680a(16) =368925874944
External references
- oeis: A269037