Number of (n+2)X(4+2) 0..3 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 0 1 3 6 or 7.

A252317

Number of (n+2)X(4+2) 0..3 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 0 1 3 6 or 7.

Terms

    a(0) =7815a(1) =2579a(2) =6011a(3) =23422a(4) =97191a(5) =409636a(6) =1741936a(7) =7424869a(8) =31630640a(9) =134638865a(10) =573240255a(11) =2441382936a(12) =10396958017a(13) =44272818260a(14) =188528191000a(15) =802834481773

External references