Number of (n+2)X(2+2) 0..1 arrays with every 3X3 subblock sum of the two medians of the central row and column plus the two sums of the diagonal and antidiagonal nondecreasing horizontally, vertically and ne-to-sw antidiagonally.

A259000

Number of (n+2)X(2+2) 0..1 arrays with every 3X3 subblock sum of the two medians of the central row and column plus the two sums of the diagonal and antidiagonal nondecreasing horizontally, vertically and ne-to-sw antidiagonally.

Terms

    a(0) =2444a(1) =6271a(2) =21073a(3) =59549a(4) =130296a(5) =263417a(6) =459014a(7) =746902a(8) =1157855a(9) =1747626a(10) =2526699a(11) =3525095a(12) =4828668a(13) =6585115a(14) =8782352a(15) =11515630a(16) =14947529a(17) =19367769a(18) =24856946a(19) =31586776a(20) =39913937a(21) =50417363a(22) =63364419a(23) =79232160a(24) =98809224

External references