Numbers that are the sum of 3 nonzero squares in exactly 7 ways.

Terms

a(0) =341a(1) =369a(2) =461a(3) =494a(4) =506a(5) =509a(6) =545a(7) =549a(8) =581a(9) =641a(10) =654a(11) =666a(12) =677a(13) =726a(14) =731a(15) =797a(16) =806a(17) =818a(18) =821a(19) =833a(20) =882a(21) =891a(22) =893a(23) =894a(24) =899a(25) =906a(26) =934a(27) =954a(28) =978a(29) =981