Numbers k such that sigma(k) + 8 = sigma(k+8).

Terms

a(0) =3a(1) =5a(2) =11a(3) =23a(4) =27a(5) =29a(6) =53a(7) =59a(8) =71a(9) =89a(10) =101a(11) =131a(12) =149a(13) =173a(14) =191a(15) =233a(16) =263a(17) =269a(18) =359a(19) =389a(20) =401a(21) =431a(22) =449a(23) =479a(24) =491a(25) =563a(26) =569a(27) =593a(28) =599a(29) =653