Numbers k such that k | 9^k + 9.

Terms

a(0) =1a(1) =2a(2) =3a(3) =6a(4) =9a(5) =10a(6) =18a(7) =30a(8) =90a(9) =123a(10) =730a(11) =7086a(12) =172426a(13) =300243a(14) =372390a(15) =449674a(16) =1812298a(17) =5027914a(18) =5307130a(19) =17214354a(20) =20788426a(21) =84929451a(22) =101992426a(23) =102177370a(24) =103544442a(25) =106494770a(26) =161388338a(27) =181327546a(28) =193710249a(29) =207083626