Number of (n+2)X(6+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.

A254566

Number of (n+2)X(6+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) =358324a(1) =1612832a(2) =7796356a(3) =12136355a(4) =25591173a(5) =67038844a(6) =120967261a(7) =285405350a(8) =585731513a(9) =1260737905a(10) =2603678606a(11) =5360553840a(12) =10780475603a(13) =21384190928a(14) =41746688525a(15) =80276252173a(16) =152118285636a(17) =284380963038a(18) =524451363363

External references