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

A254025

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

Terms

    a(0) =404672a(1) =774662a(2) =1467412a(3) =3145824a(4) =5870794a(5) =12820652a(6) =28891318a(7) =56477396a(8) =113129593a(9) =220625749a(10) =417272461a(11) =791192226a(12) =1462692894a(13) =2614134427a(14) =4635774152a(15) =8118042503a(16) =14024453614a(17) =24146030293a(18) =41379984370a(19) =70509225090

External references