Number of (2+2) X (n+2) 0..1 arrays with every 3 X 3 subblock sum of the two medians of the diagonal and antidiagonal minus the sum of the minimums of the central row and column nondecreasing horizontally, vertically and ne-to-sw antidiagonally.
A257190
Number of (2+2) X (n+2) 0..1 arrays with every 3 X 3 subblock sum of the two medians of the diagonal and antidiagonal minus the sum of the minimums of the central row and column nondecreasing horizontally, vertically and ne-to-sw antidiagonally.
Terms
- a(0) =2642a(1) =10925a(2) =47283a(3) =220126a(4) =1006996a(5) =4613955a(6) =21367247a(7) =98911734a(8) =458586500a(9) =2132449553a(10) =9926655163a(11) =46235660410a(12) =215513433328
External references
- oeis: A257190