Number of (n+2) X (4+2) 0..1 arrays with every 3 X 3 subblock sum of the two sums of the central row and central column minus the two minimums of the diagonal and antidiagonal nondecreasing horizontally and vertically.
A256950
Number of (n+2) X (4+2) 0..1 arrays with every 3 X 3 subblock sum of the two sums of the central row and central column minus the two minimums of the diagonal and antidiagonal nondecreasing horizontally and vertically.
Terms
- a(0) =42890a(1) =262251a(2) =1015815a(3) =2782301a(4) =6304044a(5) =11484877a(6) =18040804a(7) =26715881a(8) =40022560a(9) =56292649a(10) =77255078a(11) =102627725a(12) =141269994a(13) =188430201a(14) =250036700a(15) =319805527a(16) =432798068a(17) =574133619a(18) =765221004a(19) =970037933a(20) =1331064994a(21) =1795685605
External references
- oeis: A256950