Numbers k that divide s(k), where s(1)=1, s(j)=18*s(j-1)+j.

Terms

a(0) =1a(1) =2a(2) =3a(3) =6a(4) =9a(5) =17a(6) =18a(7) =21a(8) =34a(9) =38a(10) =42a(11) =51a(12) =63a(13) =102a(14) =114a(15) =126a(16) =147a(17) =153a(18) =289a(19) =294a(20) =306a(21) =342a(22) =357a(23) =441a(24) =578a(25) =646a(26) =714a(27) =722a(28) =798a(29) =867