Number of (n+2)X(6+2) 0..1 arrays with every 3X3 subblock diagonal sum plus antidiagonal median nondecreasing horizontally, vertically and ne-to-sw antidiagonally.
A254018
Number of (n+2)X(6+2) 0..1 arrays with every 3X3 subblock diagonal sum plus antidiagonal median nondecreasing horizontally, vertically and ne-to-sw antidiagonally.
Terms
- a(0) =404672a(1) =806538a(2) =2360757a(3) =8285305a(4) =8213023a(5) =12820652a(6) =26519069a(7) =34765879a(8) =46504548a(9) =78312596a(10) =126840906a(11) =207953344a(12) =361339368a(13) =611751066a(14) =1054419972a(15) =1868901933a(16) =3294200189a(17) =5849649134a(18) =10439241104a(19) =18677018702a(20) =33561673772
External references
- oeis: A254018