Numbers k such that phi(k) + 4 | sigma(k + 4).

Terms

a(0) =6a(1) =10a(2) =20a(3) =22a(4) =34a(5) =35a(6) =50a(7) =51a(8) =56a(9) =58a(10) =66a(11) =72a(12) =82a(13) =116a(14) =118a(15) =142a(16) =195a(17) =200a(18) =202a(19) =214a(20) =220a(21) =274a(22) =298a(23) =330a(24) =340a(25) =358a(26) =382a(27) =394a(28) =454a(29) =478