Numbers k such that sigma(k+2) = 2*sigma(k).

Terms

a(0) =118a(1) =1558a(2) =2938a(3) =17758a(4) =19918a(5) =32218a(6) =33838a(7) =55963a(8) =71038a(9) =186778a(10) =308038a(11) =511498a(12) =523774a(13) =553498a(14) =699358a(15) =838213a(16) =1048903a(17) =1159378a(18) =1328938a(19) =1333246a(20) =1700038a(21) =2462686a(22) =2703886a(23) =2956078a(24) =3115318a(25) =3561094a(26) =3764206a(27) =3972694a(28) =7625878a(29) =7852918