Number of (n+2)X(3+2) 0..3 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 0 2 5 6 or 7.

A252214

Number of (n+2)X(3+2) 0..3 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 0 2 5 6 or 7.

Terms

    a(0) =1843a(1) =1437a(2) =3303a(3) =10486a(4) =35674a(5) =122694a(6) =420596a(7) =1446932a(8) =4990626a(9) =17183216a(10) =59122450a(11) =203560298a(12) =701041598a(13) =2413836224a(14) =8310468498a(15) =28613117980a(16) =98520290746a(17) =339220390968

External references