Number of (7+2) X (n+2) 0..1 arrays with every 3 X 3 subblock sum of the two sums of the diagonal and antidiagonal minus the two minimums of the central column and central row nondecreasing horizontally, vertically and ne-to-sw antidiagonally.
A254913
Number of (7+2) X (n+2) 0..1 arrays with every 3 X 3 subblock sum of the two sums of the diagonal and antidiagonal minus the two minimums of the central column and central row nondecreasing horizontally, vertically and ne-to-sw antidiagonally.
Terms
- a(0) =616608a(1) =268310a(2) =73167a(3) =38752a(4) =21843a(5) =16493a(6) =10974a(7) =10203a(8) =10488a(9) =11818a(10) =12925a(11) =15168a(12) =18127a(13) =21500a(14) =26459a(15) =31278a(16) =34998a(17) =41431a(18) =49279a(19) =56961a(20) =66198a(21) =77601a(22) =89779a(23) =104252a(24) =120811a(25) =139506a(26) =160068a(27) =182670a(28) =208909a(29) =238276
External references
- oeis: A254913