a(n) is the smallest number m such that tau(m+1) = tau(m) + n.

Terms

a(0) =2a(1) =1a(2) =5a(3) =49a(4) =11a(5) =35a(6) =23a(7) =399a(8) =47a(9) =1849a(10) =59a(11) =143a(12) =119a(13) =1599a(14) =167a(15) =575a(16) =179a(17) =1295a(18) =239a(19) =4355a(20) =629a(21) =2303a(22) =359a(23) =899a(24) =959a(25) =9215a(26) =1007a(27) =39999a(28) =719a(29) =20735