Numbers k such that phi(k + 12) | sigma(k) for k not congruent to 0 (mod 3).

Terms

a(0) =14a(1) =23a(2) =38a(3) =109a(4) =248a(5) =280a(6) =380a(7) =406a(8) =506a(9) =1178a(10) =1288a(11) =1364a(12) =1504a(13) =1528a(14) =1798a(15) =1976a(16) =1978a(17) =1990a(18) =2408a(19) =2528a(20) =2698a(21) =3160a(22) =3230a(23) =4318a(24) =4888a(25) =6106a(26) =6904a(27) =7160a(28) =7192a(29) =7366