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

A254014

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

Terms

    a(0) =2540a(1) =7212a(2) =26370a(3) =98002a(4) =279743a(5) =774662a(6) =2035893a(7) =5114873a(8) =12474341a(9) =29590558a(10) =68901604a(11) =158137068a(12) =357684484a(13) =800611865a(14) =1776191086a(15) =3909310915a(16) =8548743880a(17) =18587419029a(18) =40212191986a(19) =86599353650a(20) =185779037285a(21) =397204639125

External references