Number of (4+2)X(n+2) 0..1 arrays with every 3X3 subblock diagonal sum plus antidiagonal minimum nondecreasing horizontally, vertically and ne-to-sw antidiagonally.
A257429
Number of (4+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) =41140a(1) =119393a(2) =449022a(3) =1770206a(4) =5985744a(5) =19771628a(6) =64652177a(7) =195603505a(8) =586920722a(9) =1743331948a(10) =5079106522a(11) =14663485366a(12) =42004087573a(13) =119219661191a(14) =336143582507a(15) =942853480005
External references
- oeis: A257429