Position of n-th 5 in A031035.

Terms

a(0) =5a(1) =19a(2) =35a(3) =51a(4) =67a(5) =72a(6) =74a(7) =76a(8) =78a(9) =80a(10) =82a(11) =83a(12) =84a(13) =86a(14) =99a(15) =115a(16) =137a(17) =161a(18) =185a(19) =209a(20) =233a(21) =241a(22) =244a(23) =247a(24) =250a(25) =253a(26) =256a(27) =257a(28) =259a(29) =262