Number of (4+2)X(n+2) 0..1 arrays with every 3X3 subblock diagonal sum plus antidiagonal median nondecreasing horizontally, vertically and ne-to-sw antidiagonally.

A254023

Number of (4+2)X(n+2) 0..1 arrays with every 3X3 subblock diagonal sum plus antidiagonal median nondecreasing horizontally, vertically and ne-to-sw antidiagonally.

Terms

    a(0) =35272a(1) =98002a(2) =313324a(3) =1016249a(4) =2822619a(5) =8285305a(6) =21891465a(7) =45311405a(8) =99511731a(9) =212262805a(10) =420311170a(11) =809408485a(12) =1499859218a(13) =2686392762a(14) =4785009455a(15) =8471694767a(16) =14942735625a(17) =26383699968a(18) =46574601827a(19) =82391653961a(20) =146657010999

External references