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

A254016

Number of (n+2)X(4+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) =81959a(2) =301423a(3) =1016249a(4) =1704423a(5) =3145824a(6) =6033603a(7) =10739096a(8) =18887562a(9) =33697678a(10) =60193627a(11) =107945453a(12) =197718295a(13) =364057189a(14) =668814890a(15) =1234337365a(16) =2286071198a(17) =4225324752a(18) =7835922015a(19) =14546048604a(20) =26999738978a(21) =50174666707

External references