A168007 - OEIS

A168007 as a simple table

n	a(n)
1	1
2	2
3	4
4	3
5	6
6	5
7	10
8	9
9	12
10	11
11	22
12	21
13	24
14	23
15	46
16	45
17	48
18	47
19	94
20	93
21	96
22	95
23	100
24	99
25	102
26	101
27	202
28	201
29	204
30	203
31	210
32	209
33	220
34	219
35	222
36	221
37	234
38	233
39	466
40	465
41	468
42	467
43	934
44	933
45	936
46	935
47	940
48	939
49	942
50	941
51	1882
52	1881
53	1884
54	1883
55	1890
56	1889
57	3778
58	3777
59	3780
60	3779
61	7558
62	7557
63	7560
64	7559

[1,2,4,3,6,5,10,9,12,11,22,21,24,23,46,45,48,47, 94,93,96,95,100,99,102,101,202,201,204,203,210, 209,220,219,222,221,234,233,466,465,468,467,934, 933,936,935,940,939,942,941,1882,1881,1884,1883, 1890,1889,3778,3777,3780,3779,7558,7557,7560,7559]