Numbers m such that m + sigma(m) is a repdigit.

Terms

a(0) =1a(1) =2a(2) =3a(3) =4a(4) =5a(5) =9a(6) =34a(7) =141a(8) =198a(9) =277a(10) =297a(11) =375a(12) =499a(13) =1420a(14) =2651a(15) =2777a(16) =3554a(17) =4999a(18) =19050a(19) =28660a(20) =29128a(21) =49999a(22) =131061a(23) =506311a(24) =3844863a(25) =3852517a(26) =4761903a(27) =4999999a(28) =22222218a(29) =37560831