Numbers n such that Product_{d|n} sigma(d) = Product_{d|n+1} sigma(d).

Terms

a(0) =14a(1) =1334a(2) =1634a(3) =2685a(4) =33998a(5) =42818a(6) =84134a(7) =122073a(8) =166934a(9) =289454a(10) =383594a(11) =440013a(12) =544334a(13) =605985a(14) =649154a(15) =655005a(16) =1642154a(17) =2284814a(18) =2913105a(19) =3571905a(20) =3682622a(21) =5181045a(22) =6771405a(23) =10074477a(24) =10195305a(25) =12825266a(26) =15751533a(27) =17714486a(28) =17727554a(29) =19886385