Number of (n+1)X(7+1) 0..2 arrays with every 2X2 subblock diagonal minimum minus antidiagonal minimum nondecreasing horizontally and diagonal maximum minus antidiagonal maximum nondecreasing vertically.
A253523
Number of (n+1)X(7+1) 0..2 arrays with every 2X2 subblock diagonal minimum minus antidiagonal minimum nondecreasing horizontally and diagonal maximum minus antidiagonal maximum nondecreasing vertically.
Terms
- a(0) =876277a(1) =2544290a(2) =2419612a(3) =2475610a(4) =3429207a(5) =5591131a(6) =10168992a(7) =21354009a(8) =51569897a(9) =137921376a(10) =391536224a(11) =1145589321a(12) =3399373692a(13) =10150512690a(14) =30391595567a(15) =91100083209a(16) =273208024363a(17) =819511203340
External references
- oeis: A253523