Composite numbers for which A324644(n)/A324198(n) = 2 and sigma(n) == 2 (mod 4).

Terms

a(0) =153a(1) =477a(2) =637a(3) =909a(4) =1017a(5) =1233a(6) =1557a(7) =2097a(8) =3577a(9) =4753a(10) =9457a(11) =10693a(12) =10933a(13) =12393a(14) =13357a(15) =14013a(16) =15337a(17) =17629a(18) =20817a(19) =21097a(20) =21217a(21) =22021a(22) =26353a(23) =29449a(24) =30037a(25) =30717a(26) =31117a(27) =31149a(28) =31797a(29) =32013