Let M(n) be the n X n matrix m(i,j)=min(i,j) for 1<=i,j<=n then a(n) is the trace of M(n)^(-8).

Terms

a(0) =1a(1) =2207a(2) =12389a(3) =25147a(4) =38017a(5) =50887a(6) =63757a(7) =76627a(8) =89497a(9) =102367a(10) =115237a(11) =128107a(12) =140977a(13) =153847a(14) =166717a(15) =179587a(16) =192457a(17) =205327a(18) =218197a(19) =231067a(20) =243937a(21) =256807a(22) =269677a(23) =282547a(24) =295417a(25) =308287a(26) =321157a(27) =334027a(28) =346897a(29) =359767