Number of (4+2)X(n+2) 0..1 arrays with every 3X3 subblock diagonal sum minus antidiagonal minimum nondecreasing horizontally, vertically and ne-to-sw antidiagonally.
A254556
Number of (4+2)X(n+2) 0..1 arrays with every 3X3 subblock diagonal sum minus antidiagonal minimum nondecreasing horizontally, vertically and ne-to-sw antidiagonally.
Terms
- a(0) =47140a(1) =128366a(2) =380406a(3) =1193965a(4) =3638432a(5) =11160591a(6) =32790229a(7) =92202169a(8) =251677983a(9) =676917833a(10) =1814981434a(11) =4893689293a(12) =13297063017a(13) =36436208384a(14) =100511846076a(15) =278663820410a(16) =775259097470
External references
- oeis: A254556