Number of (6+2)X(n+2) 0..1 arrays with every 3X3 subblock diagonal sum plus antidiagonal minimum nondecreasing horizontally, vertically and ne-to-sw antidiagonally.
A257431
Number of (6+2)X(n+2) 0..1 arrays with every 3X3 subblock diagonal sum plus antidiagonal minimum nondecreasing horizontally, vertically and ne-to-sw antidiagonally.
Terms
- a(0) =514920a(1) =1293242a(2) =3917190a(3) =13233402a(4) =36423140a(5) =115919394a(6) =356678661a(7) =1013024839a(8) =2950063325a(9) =8706010338a(10) =24924494772a(11) =71250809523a(12) =201815907569a(13) =564593588950
External references
- oeis: A257431