Position of n-th 5 in A030998.

Terms

a(0) =5a(1) =18a(2) =32a(3) =46a(4) =60a(5) =63a(6) =65a(7) =67a(8) =69a(9) =71a(10) =73a(11) =74a(12) =75a(13) =88a(14) =108a(15) =129a(16) =150a(17) =171a(18) =192a(19) =197a(20) =200a(21) =203a(22) =206a(23) =209a(24) =212a(25) =213a(26) =215a(27) =234a(28) =255a(29) =276