Least number m such that denominator(sigma(m)/(m+1)) = n, or zero if no such m exists.

Terms

a(0) =2a(1) =1a(2) =8a(3) =95a(4) =4a(5) =143a(6) =6a(7) =63a(8) =26a(9) =9a(10) =10a(11) =16415a(12) =12a(13) =111a(14) =44a(15) =255a(16) =16a(17) =273023a(18) =18a(19) =159a(20) =62a(21) =175a(22) =22a(23) =575a(24) =74a(25) =25a(26) =80a(27) =671a(28) =28a(29) =3599