Number of (2+1) X (n+1) 0..1 arrays with every 2 X 2 subblock diagonal maximum minus antidiagonal maximum nondecreasing horizontally, vertically and ne-to-sw antidiagonally.
A253351
Number of (2+1) X (n+1) 0..1 arrays with every 2 X 2 subblock diagonal maximum minus antidiagonal maximum nondecreasing horizontally, vertically and ne-to-sw antidiagonally.
Terms
- a(0) =47a(1) =173a(2) =724a(3) =3160a(4) =13810a(5) =60368a(6) =263920a(7) =1153880a(8) =5044984a(9) =22057880a(10) =96442840a(11) =421674392a(12) =1843677400a(13) =8061072920a(14) =35245271896a(15) =154102230680a(16) =673778278360
External references
- oeis: A253351