A031309 - cp's OEIS frontend

A031309 a(n)=least k such that base 10 representation of n begins at s(k), where s=A031298.

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	6
7	7
8	8
9	9
10	29
11	11
12	1
13	15
14	17
15	19
16	21
17	23
18	25
19	27
20	49
21	14
22	33
23	2
24	37
25	39
26	41
27	43
28	45
29	47
30	69
31	16
32	36
33	55
34	3
35	59
36	61
37	63
38	65
39	67
40	89
41	18
42	38
43	58
44	77
45	4
46	81
47	83
48	85
49	87
50	109
51	20
52	40
53	60
54	80
55	99
56	5
57	103
58	105
59	107
60	129
61	22
62	42
63	62
64	82

[1, 2, 3, 4, 5, 6, 7, 8, 9, 29, 11, 1, 15, 17, 19, 21, 23, 25, 27, 49, 14, 33, 2, 37, 39, 41, 43, 45, 47, 69, 16, 36, 55, 3, 59, 61, 63, 65, 67, 89, 18, 38, 58, 77, 4, 81, 83, 85, 87, 109, 20, 40, 60, 80, 99, 5, 103, 105, 107, 129, 22, 42, 62, 82]

cp's OEIS Frontend

A031309 a(n)=least k such that base 10 representation of n begins at s(k), where s=A031298.

Table of values

List of values

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	6
7	7
8	8
9	9
10	29
11	11
12	1
13	15
14	17
15	19
16	21
17	23
18	25
19	27
20	49
21	14
22	33
23	2
24	37
25	39
26	41
27	43
28	45
29	47
30	69
31	16
32	36
33	55
34	3
35	59
36	61
37	63
38	65
39	67
40	89
41	18
42	38
43	58
44	77
45	4
46	81
47	83
48	85
49	87
50	109
51	20
52	40
53	60
54	80
55	99
56	5
57	103
58	105
59	107
60	129
61	22
62	42
63	62
64	82

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	6
7	7
8	8
9	9
10	29
11	11
12	1
13	15
14	17
15	19
16	21
17	23
18	25
19	27
20	49
21	14
22	33
23	2
24	37
25	39
26	41
27	43
28	45
29	47
30	69
31	16
32	36
33	55
34	3
35	59
36	61
37	63
38	65
39	67
40	89
41	18
42	38
43	58
44	77
45	4
46	81
47	83
48	85
49	87
50	109
51	20
52	40
53	60
54	80
55	99
56	5
57	103
58	105
59	107
60	129
61	22
62	42
63	62
64	82

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	6
7	7
8	8
9	9
10	29
11	11
12	1
13	15
14	17
15	19
16	21
17	23
18	25
19	27
20	49
21	14
22	33
23	2
24	37
25	39
26	41
27	43
28	45
29	47
30	69
31	16
32	36
33	55
34	3
35	59
36	61
37	63
38	65
39	67
40	89
41	18
42	38
43	58
44	77
45	4
46	81
47	83
48	85
49	87
50	109
51	20
52	40
53	60
54	80
55	99
56	5
57	103
58	105
59	107
60	129
61	22
62	42
63	62
64	82