Squarefree numbers congruent to 1 (mod 4).

Terms

a(0) =1a(1) =5a(2) =13a(3) =17a(4) =21a(5) =29a(6) =33a(7) =37a(8) =41a(9) =53a(10) =57a(11) =61a(12) =65a(13) =69a(14) =73a(15) =77a(16) =85a(17) =89a(18) =93a(19) =97a(20) =101a(21) =105a(22) =109a(23) =113a(24) =129a(25) =133a(26) =137a(27) =141a(28) =145a(29) =149