Number of (n+1)X(3+1) 0..2 arrays with every 2X2 subblock sum differing from its neighbors horizontally, vertically, diagonally and antidiagonally.
A253291
Number of (n+1)X(3+1) 0..2 arrays with every 2X2 subblock sum differing from its neighbors horizontally, vertically, diagonally and antidiagonally.
Terms
- a(0) =3844a(1) =23546a(2) =140536a(3) =1029888a(4) =7431136a(5) =52784020a(6) =376392916a(7) =2705942488a(8) =19441124904a(9) =139538118106
External references
- oeis: A253291