Numbers n such that phi(n + 9) | sigma(n) for n not congruent to 0 (mod 3).

Terms

a(0) =5a(1) =7a(2) =10a(3) =31a(4) =47a(5) =79a(6) =127a(7) =145a(8) =161a(9) =223a(10) =238a(11) =239a(12) =355a(13) =367a(14) =371a(15) =376a(16) =418a(17) =455a(18) =463a(19) =479a(20) =748a(21) =863a(22) =1039a(23) =1045a(24) =1087a(25) =1103a(26) =1118a(27) =1327a(28) =1423a(29) =1439