A114308 - cp's OEIS frontend

A114308 Self-describing sequence: sequence starts with a(1) = 1 and a(n) is chosen to be the smallest number > a(n-1) such that the assertion "sequence gives the positions of the odd digits when the sequence is read as a string of digits" is true.

n	a(n)
1	1
2	4
3	6
4	7
5	8
6	9
7	11
8	12
9	13
10	16
11	21
12	22
13	24
14	31
15	41
16	42
17	44
18	46
19	50
20	60
21	62
22	64
23	66
24	71
25	81
26	83
27	84
28	85
29	86
30	88
31	200
32	201
33	210
34	301
35	400
36	410
37	420
38	422
39	423
40	431
41	510
42	520
43	600
44	602
45	604
46	606
47	608
48	620
49	622
50	624
51	626
52	628
53	640
54	642
55	644
56	646
57	648
58	660

[1, 4, 6, 7, 8, 9, 11, 12, 13, 16, 21, 22, 24, 31, 41, 42, 44, 46, 50, 60, 62, 64, 66, 71, 81, 83, 84, 85, 86, 88, 200, 201, 210, 301, 400, 410, 420, 422, 423, 431, 510, 520, 600, 602, 604, 606, 608, 620, 622, 624, 626, 628, 640, 642, 644, 646, 648, 660]

cp's OEIS Frontend

A114308 Self-describing sequence: sequence starts with a(1) = 1 and a(n) is chosen to be the smallest number > a(n-1) such that the assertion "sequence gives the positions of the odd digits when the sequence is read as a string of digits" is true.

Table of values

List of values

n	a(n)
1	1
2	4
3	6
4	7
5	8
6	9
7	11
8	12
9	13
10	16
11	21
12	22
13	24
14	31
15	41
16	42
17	44
18	46
19	50
20	60
21	62
22	64
23	66
24	71
25	81
26	83
27	84
28	85
29	86
30	88
31	200
32	201
33	210
34	301
35	400
36	410
37	420
38	422
39	423
40	431
41	510
42	520
43	600
44	602
45	604
46	606
47	608
48	620
49	622
50	624
51	626
52	628
53	640
54	642
55	644
56	646
57	648
58	660

n	a(n)
1	1
2	4
3	6
4	7
5	8
6	9
7	11
8	12
9	13
10	16
11	21
12	22
13	24
14	31
15	41
16	42
17	44
18	46
19	50
20	60
21	62
22	64
23	66
24	71
25	81
26	83
27	84
28	85
29	86
30	88
31	200
32	201
33	210
34	301
35	400
36	410
37	420
38	422
39	423
40	431
41	510
42	520
43	600
44	602
45	604
46	606
47	608
48	620
49	622
50	624
51	626
52	628
53	640
54	642
55	644
56	646
57	648
58	660

n	a(n)
1	1
2	4
3	6
4	7
5	8
6	9
7	11
8	12
9	13
10	16
11	21
12	22
13	24
14	31
15	41
16	42
17	44
18	46
19	50
20	60
21	62
22	64
23	66
24	71
25	81
26	83
27	84
28	85
29	86
30	88
31	200
32	201
33	210
34	301
35	400
36	410
37	420
38	422
39	423
40	431
41	510
42	520
43	600
44	602
45	604
46	606
47	608
48	620
49	622
50	624
51	626
52	628
53	640
54	642
55	644
56	646
57	648
58	660