Numbers k such that string 1,5 occurs in the base 9 representation of k but not of k+1.

Terms

a(0) =14a(1) =95a(2) =134a(3) =176a(4) =257a(5) =338a(6) =419a(7) =500a(8) =581a(9) =662a(10) =743a(11) =824a(12) =863a(13) =905a(14) =986a(15) =1067a(16) =1214a(17) =1229a(18) =1310a(19) =1391a(20) =1472a(21) =1553a(22) =1592a(23) =1634a(24) =1715a(25) =1796a(26) =1877a(27) =1958a(28) =2039a(29) =2120