Numbers of form x^2 + 5 y^2.

Terms

a(0) =0a(1) =1a(2) =4a(3) =5a(4) =6a(5) =9a(6) =14a(7) =16a(8) =20a(9) =21a(10) =24a(11) =25a(12) =29a(13) =30a(14) =36a(15) =41a(16) =45a(17) =46a(18) =49a(19) =54a(20) =56a(21) =61a(22) =64a(23) =69a(24) =70a(25) =80a(26) =81a(27) =84a(28) =86a(29) =89