Number of 17 X 17 arrays of squares of integers, symmetric about the diagonal and under 90 degree rotation, with all rows summing to n.

A156424

Number of 17 X 17 arrays of squares of integers, symmetric about the diagonal and under 90 degree rotation, with all rows summing to n.

Terms

    a(0) =1a(1) =0a(2) =0a(3) =0a(4) =66178a(5) =0a(6) =0a(7) =0a(8) =7777280a(9) =0a(10) =0a(11) =0a(12) =73938288a(13) =0a(14) =0a(15) =0a(16) =1262896895a(17) =89959563a(18) =0a(19) =0a(20) =5559809528a(21) =0a(22) =0a(23) =0a(24) =30866580416a(25) =991288522a(26) =0a(27) =0

External references