Number of (n+2)X(7+2) 0..1 arrays with every 3X3 subblock diagonal sum plus antidiagonal minimum nondecreasing horizontally, vertically and ne-to-sw antidiagonally.
A257425
Number of (n+2)X(7+2) 0..1 arrays with every 3X3 subblock diagonal sum plus antidiagonal minimum nondecreasing horizontally, vertically and ne-to-sw antidiagonally.
Terms
- a(0) =1700100a(1) =4137316a(2) =18009368a(3) =64652177a(4) =121832476a(5) =356678661a(6) =1037269100a(7) =2359203628a(8) =7099788830a(9) =18202585668a(10) =46382073874a(11) =125815055340a(12) =344959665026a(13) =927065687056
External references
- oeis: A257425