Number of (n+1)X(5+1) 0..2 arrays with every 2X2 subblock sum differing from its neighbors horizontally, vertically, diagonally and antidiagonally.
A253293
Number of (n+1)X(5+1) 0..2 arrays with every 2X2 subblock sum differing from its neighbors horizontally, vertically, diagonally and antidiagonally.
Terms
- a(0) =186624a(1) =1184928a(2) =7431136a(3) =61286116a(4) =486417836a(5) =4028778100a(6) =32585471254a(7) =268974784168
External references
- oeis: A253293