Number of (n+2)X(6+2) 0..1 arrays with every 3X3 subblock diagonal sum plus antidiagonal minimum nondecreasing horizontally, vertically and ne-to-sw antidiagonally.

A257424

Number of (n+2)X(6+2) 0..1 arrays with every 3X3 subblock diagonal sum plus antidiagonal minimum nondecreasing horizontally, vertically and ne-to-sw antidiagonally.

Terms

    a(0) =514920a(1) =1246585a(2) =5347670a(3) =19771628a(4) =39029574a(5) =115919394a(6) =317271378a(7) =756210536a(8) =2131836574a(9) =5828147664a(10) =15609807360a(11) =43074413716a(12) =116962517460a(13) =315815849814a(14) =863675994118

External references