Number of sets of exactly seven positive integers <= n having a square element sum.

Terms

a(0) =0a(1) =0a(2) =4a(3) =10a(4) =25a(5) =60a(6) =124a(7) =238a(8) =435a(9) =750a(10) =1237a(11) =1973a(12) =3047a(13) =4574a(14) =6706a(15) =9624a(16) =13546a(17) =18742a(18) =25533a(19) =34292a(20) =45469a(21) =59585a(22) =77238a(23) =99127a(24) =126048a(25) =158897a(26) =198713a(27) =246663a(28) =304057a(29) =372374