Number of (n+2)X(4+2) 0..1 arrays with every 3X3 subblock diagonal sum plus antidiagonal minimum nondecreasing horizontally, vertically and ne-to-sw antidiagonally.
A257422
Number of (n+2)X(4+2) 0..1 arrays with every 3X3 subblock diagonal sum plus antidiagonal minimum nondecreasing horizontally, vertically and ne-to-sw antidiagonally.
Terms
- a(0) =41140a(1) =103575a(2) =450756a(3) =1770206a(4) =4442466a(5) =13233402a(6) =36058660a(7) =94181694a(8) =259847932a(9) =722844592a(10) =1965855694a(11) =5405634454a(12) =14813746242a(13) =40504964992a(14) =111029975004a(15) =304364243354a(16) =832977215094
External references
- oeis: A257422