Number of 7X7 arrays of squares of integers, symmetric about main diagonal, with all rows summing to n.

A156391

Number of 7X7 arrays of squares of integers, symmetric about main diagonal, with all rows summing to n.

Terms

    a(0) =1a(1) =232a(2) =6912a(3) =35150a(4) =42354a(5) =44124a(6) =425674a(7) =804511a(8) =446508a(9) =638012a(10) =4465916a(11) =5291400a(12) =2246390a(13) =3026820a(14) =18106164a(15) =25432912a(16) =12496449a(17) =5934606a(18) =46859304a(19) =91441740a(20) =47944020a(21) =17647254a(22) =123856526a(23) =218810112a(24) =102258544a(25) =46559350

External references