Numbers that are the sum of 3 nonzero squares in exactly 2 ways.

Terms

a(0) =27a(1) =33a(2) =38a(3) =41a(4) =51a(5) =57a(6) =59a(7) =62a(8) =69a(9) =74a(10) =75a(11) =77a(12) =83a(13) =90a(14) =94a(15) =98a(16) =102a(17) =105a(18) =107a(19) =108a(20) =113a(21) =117a(22) =118a(23) =121a(24) =122a(25) =123a(26) =125a(27) =132a(28) =137a(29) =138