A030311 - cp's OEIS frontend

A030311 Least k such that the base-2 representation of n begins at s(k), where s=A030308.

n	a(n)
1	1
2	1
3	3
4	5
5	1
6	4
7	3
8	17
9	5
10	9
11	1
12	4
13	8
14	3
15	13
16	49
17	17
18	22
19	5
20	31
21	9
22	38
23	1
24	16
25	4
26	8
27	37
28	3
29	29
30	14
31	13
32	129
33	49
34	55
35	17
36	66
37	22
38	5
39	33
40	87
41	31
42	75
43	9
44	106
45	38
46	1
47	11
48	48
49	16
50	21
51	4
52	30
53	8
54	37
55	40
56	15
57	3
58	29
59	36
60	14
61	84
62	13
63	43
64	321
65	129
66	136
67	49

[1, 1, 3, 5, 1, 4, 3, 17, 5, 9, 1, 4, 8, 3, 13, 49, 17, 22, 5, 31, 9, 38, 1, 16, 4, 8, 37, 3, 29, 14, 13, 129, 49, 55, 17, 66, 22, 5, 33, 87, 31, 75, 9, 106, 38, 1, 11, 48, 16, 21, 4, 30, 8, 37, 40, 15, 3, 29, 36, 14, 84, 13, 43, 321, 129, 136, 49]

cp's OEIS Frontend

A030311 Least k such that the base-2 representation of n begins at s(k), where s=A030308.

Table of values

List of values

n	a(n)
1	1
2	1
3	3
4	5
5	1
6	4
7	3
8	17
9	5
10	9
11	1
12	4
13	8
14	3
15	13
16	49
17	17
18	22
19	5
20	31
21	9
22	38
23	1
24	16
25	4
26	8
27	37
28	3
29	29
30	14
31	13
32	129
33	49
34	55
35	17
36	66
37	22
38	5
39	33
40	87
41	31
42	75
43	9
44	106
45	38
46	1
47	11
48	48
49	16
50	21
51	4
52	30
53	8
54	37
55	40
56	15
57	3
58	29
59	36
60	14
61	84
62	13
63	43
64	321
65	129
66	136
67	49

n	a(n)
1	1
2	1
3	3
4	5
5	1
6	4
7	3
8	17
9	5
10	9
11	1
12	4
13	8
14	3
15	13
16	49
17	17
18	22
19	5
20	31
21	9
22	38
23	1
24	16
25	4
26	8
27	37
28	3
29	29
30	14
31	13
32	129
33	49
34	55
35	17
36	66
37	22
38	5
39	33
40	87
41	31
42	75
43	9
44	106
45	38
46	1
47	11
48	48
49	16
50	21
51	4
52	30
53	8
54	37
55	40
56	15
57	3
58	29
59	36
60	14
61	84
62	13
63	43
64	321
65	129
66	136
67	49

n	a(n)
1	1
2	1
3	3
4	5
5	1
6	4
7	3
8	17
9	5
10	9
11	1
12	4
13	8
14	3
15	13
16	49
17	17
18	22
19	5
20	31
21	9
22	38
23	1
24	16
25	4
26	8
27	37
28	3
29	29
30	14
31	13
32	129
33	49
34	55
35	17
36	66
37	22
38	5
39	33
40	87
41	31
42	75
43	9
44	106
45	38
46	1
47	11
48	48
49	16
50	21
51	4
52	30
53	8
54	37
55	40
56	15
57	3
58	29
59	36
60	14
61	84
62	13
63	43
64	321
65	129
66	136
67	49