Least k such that sigma(k*n)/tau(k*n) = sigma(k*n+1)/tau(k*n+1), or 0 if no such k exists.

Terms

a(0) =5a(1) =7a(2) =895a(3) =1363a(4) =1a(5) =3353a(6) =2a(7) =2589a(8) =1007a(9) =10341a(10) =1265a(11) =1726a(12) =7a(13) =1a(14) =179a(15) =6634a(16) =10052a(17) =5745a(18) =86a(19) =53389a(20) =958a(21) =12165a(22) =58a(23) =863a(24) =649a(25) =250017a(26) =2395a(27) =6103a(28) =46a(29) =3447