Number of 2 X n 0..3 arrays with some element plus some horizontally or antidiagonally adjacent neighbor totalling three exactly once.
A269277
Number of 2 X n 0..3 arrays with some element plus some horizontally or antidiagonally adjacent neighbor totalling three exactly once.
Terms
- a(0) =0a(1) =108a(2) =1368a(3) =13896a(4) =127512a(5) =1104264a(6) =9211608a(7) =74853576a(8) =596581272a(9) =4684312584a(10) =36347893848a(11) =279339197256
External references
- oeis: A269277