Number of (n+2)X(5+2) 0..1 arrays with every 3X3 subblock sum of the four sums of the central row, central column, diagonal and antidiagonal nondecreasing horizontally and vertically.
A254565
Number of (n+2)X(5+2) 0..1 arrays with every 3X3 subblock sum of the four sums of the central row, central column, diagonal and antidiagonal nondecreasing horizontally and vertically.
Terms
- a(0) =116056a(1) =536906a(2) =2647806a(3) =4796417a(4) =10679860a(5) =25591173a(6) =45085796a(7) =101378800a(8) =196258426a(9) =401333712a(10) =788651082a(11) =1539724687a(12) =2943252490a(13) =5549226489a(14) =10301160312a(15) =18857921168a(16) =34041174352a(17) =60655369674a(18) =106683727874
External references
- oeis: A254565