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

A254013

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

Terms

    a(0) =512a(1) =2540a(2) =9560a(3) =35272a(4) =123448a(5) =404672a(6) =1267488a(7) =3838248a(8) =11314584a(9) =32633748a(10) =92478904a(11) =258255040a(12) =712440672a(13) =1945445460a(14) =5266796600a(15) =14154242168a(16) =37800414832a(17) =100406141124a(18) =265461537608a(19) =699029097480

External references