Numbers k that divide s(k), where s(1)=1, s(j)=8*s(j-1)+j.

Terms

a(0) =1a(1) =2a(2) =4a(3) =6a(4) =7a(5) =8a(6) =12a(7) =14a(8) =18a(9) =20a(10) =24a(11) =28a(12) =36a(13) =40a(14) =42a(15) =49a(16) =52a(17) =54a(18) =56a(19) =60a(20) =72a(21) =84a(22) =98a(23) =100a(24) =104a(25) =108a(26) =114a(27) =120a(28) =126a(29) =136