Hypotenuse numbers (squares are sums of 2 nonzero squares).

Terms

a(0) =5a(1) =10a(2) =13a(3) =15a(4) =17a(5) =20a(6) =25a(7) =26a(8) =29a(9) =30a(10) =34a(11) =35a(12) =37a(13) =39a(14) =40a(15) =41a(16) =45a(17) =50a(18) =51a(19) =52a(20) =53a(21) =55a(22) =58a(23) =60a(24) =61a(25) =65a(26) =68a(27) =70a(28) =73a(29) =74