Numbers having four 0's in base 10.

Terms

a(0) =10000a(1) =20000a(2) =30000a(3) =40000a(4) =50000a(5) =60000a(6) =70000a(7) =80000a(8) =90000a(9) =100001a(10) =100002a(11) =100003a(12) =100004a(13) =100005a(14) =100006a(15) =100007a(16) =100008a(17) =100009a(18) =100010a(19) =100020a(20) =100030a(21) =100040a(22) =100050a(23) =100060a(24) =100070a(25) =100080a(26) =100090a(27) =100100