Number of (n+2)X(n+2) 0..1 arrays with no 3x3 subblock diagonal sum equal to the antidiagonal sum or central row sum less than the central column sum.
A257353
Number of (n+2)X(n+2) 0..1 arrays with no 3x3 subblock diagonal sum equal to the antidiagonal sum or central row sum less than the central column sum.
Terms
- a(0) =220a(1) =2116a(2) =17056a(3) =101124a(4) =482560a(5) =2433600a(6) =12278736a(7) =62948356a(8) =314007680a(9) =1594085476a(10) =8000673008a(11) =40717589796a(12) =204018474192
External references
- oeis: A257353