Number of (n+2)X(3+2) 0..2 arrays with no 3x3 subblock diagonal sum less than the antidiagonal sum or central row sum equal to the central column sum.
A257268
Number of (n+2)X(3+2) 0..2 arrays with no 3x3 subblock diagonal sum less than the antidiagonal sum or central row sum equal to the central column sum.
Terms
- a(0) =1257600a(1) =29746116a(2) =358153488a(3) =4497848356a(4) =39749497116a(5) =360292859536
External references
- oeis: A257268