Number of (n+2)X(7+2) 0..1 arrays with every 3X3 subblock diagonal sum plus antidiagonal median nondecreasing horizontally, vertically and ne-to-sw antidiagonally.

A254019

Number of (n+2)X(7+2) 0..1 arrays with every 3X3 subblock diagonal sum plus antidiagonal median nondecreasing horizontally, vertically and ne-to-sw antidiagonally.

Terms

    a(0) =1267488a(1) =2368198a(2) =6432784a(3) =21891465a(4) =18851978a(5) =28891318a(6) =45398628a(7) =57587604a(8) =84247446a(9) =134567960a(10) =203688560a(11) =338663188a(12) =575964872a(13) =955930974a(14) =1656679682a(15) =2897733371a(16) =4993925438a(17) =8874126971a(18) =15702627844a(19) =27852983633a(20) =50014965354

External references