Numbers of form 4 x^2 + 5 y^2.

Terms

a(0) =0a(1) =4a(2) =5a(3) =9a(4) =16a(5) =20a(6) =21a(7) =24a(8) =36a(9) =41a(10) =45a(11) =49a(12) =56a(13) =61a(14) =64a(15) =69a(16) =80a(17) =81a(18) =84a(19) =96a(20) =100a(21) =105a(22) =109a(23) =116a(24) =120a(25) =125a(26) =129a(27) =141a(28) =144a(29) =145