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

A253933

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

Terms

    a(0) =263476a(1) =756553a(2) =2326216a(3) =6795110a(4) =6348659a(5) =11962178a(6) =17762028a(7) =22189517a(8) =34970988a(9) =55170420a(10) =84715864a(11) =133392623a(12) =208289228a(13) =322672996a(14) =500237454a(15) =770901679a(16) =1177667175a(17) =1786589429a(18) =2690333088a(19) =4017704901a(20) =5947381463

External references