Composite numbers n such that sigma(n)+12 = sigma(n+12).

Terms

a(0) =65a(1) =170a(2) =209a(3) =1394a(4) =3393a(5) =4407a(6) =4556a(7) =11009a(8) =13736a(9) =27674a(10) =38009a(11) =38845a(12) =47402a(13) =76994a(14) =157994a(15) =162393a(16) =184740a(17) =186686a(18) =209294a(19) =680609a(20) =825359a(21) =954521a(22) =1243574a(23) =2205209a(24) =3515609a(25) =4347209a(26) =5968502a(27) =6539102a(28) =6916241a(29) =8165294