Relative of Hofstadter Q-sequence.

Terms

a(0) =28a(1) =10001a(2) =10002a(3) =10003a(4) =10004a(5) =10005a(6) =10006a(7) =10007a(8) =35a(9) =10008a(10) =10009a(11) =10010a(12) =10011a(13) =10012a(14) =10013a(15) =10014a(16) =42a(17) =10015a(18) =10016a(19) =10017a(20) =10018a(21) =10019a(22) =10020a(23) =10021a(24) =49a(25) =10022a(26) =10023a(27) =10024a(28) =10025a(29) =10026