Indices k such that k divides A007468(k).

Terms

a(0) =1a(1) =2a(2) =4a(3) =6a(4) =8a(5) =10a(6) =38a(7) =47a(8) =86a(9) =108a(10) =122a(11) =322a(12) =345a(13) =446a(14) =556a(15) =665a(16) =756a(17) =1122a(18) =1476a(19) =4838a(20) =6274a(21) =10556a(22) =12383a(23) =38774a(24) =42776a(25) =46239a(26) =210215a(27) =232276a(28) =517144a(29) =1125321