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

A253846

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

Terms

    a(0) =263476a(1) =265117a(2) =201331a(3) =204420a(4) =209862a(5) =295098a(6) =427510a(7) =627452a(8) =963880a(9) =1514191a(10) =2521112a(11) =4297857a(12) =7398589a(13) =12871519a(14) =22452335a(15) =38934291a(16) =66781746a(17) =113008987a(18) =188383014a(19) =309220327a(20) =499665691a(21) =795228954a(22) =1247306057a(23) =1929511720

External references