A028424 - OEIS

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A028424 as a simple table

n	a(n)
1	1
2	2
3	12
4	13
5	14
6	15
7	16
8	17
9	63
10	64
11	65
12	66
13	67
14	68
15	69
16	70
17	71
18	72
19	73
20	74
21	75
22	76
23	77
24	78
25	79
26	80
27	999
28	1000
29	1001
30	1002
31	1003
32	1004
33	1005
34	1006
35	1007
36	1008
37	1009
38	1010
39	1011
40	1012
41	1013
42	1014
43	1015
44	1016
45	1017
46	1018
47	1019
48	1020
49	1021
50	1022
51	1023

[1,2,12,13,14,15,16,17,63,64,65,66,67,68,69,70,71, 72,73,74,75,76,77,78,79,80,999,1000,1001,1002, 1003,1004,1005,1006,1007,1008,1009,1010,1011,1012, 1013,1014,1015,1016,1017,1018,1019,1020,1021,1022, 1023]