A136818 - OEIS

A136818 as a simple table

n	a(n)
1	0
2	1
3	2
4	4
5	10
6	11
7	12
8	20
9	21
10	40
11	46
12	100
13	101
14	102
15	110
16	120
17	121
18	142
19	162
20	200
21	201
22	204
23	210
24	400
25	402
26	460
27	642
28	1000
29	1001
30	1002
31	1010
32	1011
33	1012
34	1020
35	1021
36	1100
37	1101
38	1102
39	1200
40	1201
41	1210
42	1420
43	1620
44	2000
45	2001
46	2004
47	2010
48	2011
49	2040
50	2100
51	2101
52	2462
53	4000
54	4002
55	4020
56	4600
57	6404
58	6420
59	6642
60	10000
61	10001
62	10002
63	10010
64	10011
65	10012
66	10020

[0,1,2,4,10,11,12,20,21,40,46,100,101,102,110,120, 121,142,162,200,201,204,210,400,402,460,642,1000, 1001,1002,1010,1011,1012,1020,1021,1100,1101,1102, 1200,1201,1210,1420,1620,2000,2001,2004,2010,2011, 2040,2100,2101,2462,4000,4002,4020,4600,6404,6420, 6642,10000,10001,10002,10010,10011,10012,10020]