Number of (n+2)X(7+2) 0..1 arrays with every 3X3 subblock diagonal sum plus antidiagonal sum nondecreasing horizontally and vertically.

A253934

Number of (n+2)X(7+2) 0..1 arrays with every 3X3 subblock diagonal sum plus antidiagonal sum nondecreasing horizontally and vertically.

Terms

    a(0) =709704a(1) =1786831a(2) =4928792a(3) =13179071a(4) =9470400a(5) =17762028a(6) =31663440a(7) =40874791a(8) =67588814a(9) =114752167a(10) =187236938a(11) =308804212a(12) =504175746a(13) =814016078a(14) =1308165346a(15) =2082298220a(16) =3276474924a(17) =5108994892a(18) =7891481786a(19) =12067402454a(20) =18266075120

External references