Number of 4Xn 0..2 arrays with some element plus some horizontally, diagonally or antidiagonally adjacent neighbor totalling two exactly once.
A269038
Number of 4Xn 0..2 arrays with some element plus some horizontally, diagonally or antidiagonally adjacent neighbor totalling two exactly once.
Terms
- a(0) =0a(1) =504a(2) =2136a(3) =18384a(4) =115656a(5) =785124a(6) =4998648a(7) =31834476a(8) =198736752a(9) =1231177296a(10) =7552688064a(11) =46020487500a(12) =278641166280
External references
- oeis: A269038