A130742 - cp's OEIS frontend

A130742 Reciprocal of the base-2 logarithm of the ratio between consecutive primes, rounded down.

n	a(n)
1	1
2	1
3	2
4	1
5	4
6	2
7	6
8	3
9	2
10	10
11	3
12	6
13	14
14	7
15	5
16	6
17	20
18	7
19	11
20	24
21	8
22	14
23	9
24	8
25	17
26	35
27	18
28	37
29	19
30	5
31	22
32	15
33	47
34	9
35	51
36	17
37	18
38	28
39	19
40	20
41	62
42	12
43	66
44	33
45	68
46	11
47	12
48	38
49	79
50	40
51	27
52	83
53	17
54	29
55	30
56	30
57	93
58	31
59	48
60	97
61	19
62	14
63	53
64	108
65	54
66	16
67	38
68	23
69	120
70	60
71	41
72	31
73	42
74	43
75	66
76	44
77	34

[1, 1, 2, 1, 4, 2, 6, 3, 2, 10, 3, 6, 14, 7, 5, 6, 20, 7, 11, 24, 8, 14, 9, 8, 17, 35, 18, 37, 19, 5, 22, 15, 47, 9, 51, 17, 18, 28, 19, 20, 62, 12, 66, 33, 68, 11, 12, 38, 79, 40, 27, 83, 17, 29, 30, 30, 93, 31, 48, 97, 19, 14, 53, 108, 54, 16, 38, 23, 120, 60, 41, 31, 42, 43, 66, 44, 34]

cp's OEIS Frontend

A130742 Reciprocal of the base-2 logarithm of the ratio between consecutive primes, rounded down.

Table of values

List of values

n	a(n)
1	1
2	1
3	2
4	1
5	4
6	2
7	6
8	3
9	2
10	10
11	3
12	6
13	14
14	7
15	5
16	6
17	20
18	7
19	11
20	24
21	8
22	14
23	9
24	8
25	17
26	35
27	18
28	37
29	19
30	5
31	22
32	15
33	47
34	9
35	51
36	17
37	18
38	28
39	19
40	20
41	62
42	12
43	66
44	33
45	68
46	11
47	12
48	38
49	79
50	40
51	27
52	83
53	17
54	29
55	30
56	30
57	93
58	31
59	48
60	97
61	19
62	14
63	53
64	108
65	54
66	16
67	38
68	23
69	120
70	60
71	41
72	31
73	42
74	43
75	66
76	44
77	34

n	a(n)
1	1
2	1
3	2
4	1
5	4
6	2
7	6
8	3
9	2
10	10
11	3
12	6
13	14
14	7
15	5
16	6
17	20
18	7
19	11
20	24
21	8
22	14
23	9
24	8
25	17
26	35
27	18
28	37
29	19
30	5
31	22
32	15
33	47
34	9
35	51
36	17
37	18
38	28
39	19
40	20
41	62
42	12
43	66
44	33
45	68
46	11
47	12
48	38
49	79
50	40
51	27
52	83
53	17
54	29
55	30
56	30
57	93
58	31
59	48
60	97
61	19
62	14
63	53
64	108
65	54
66	16
67	38
68	23
69	120
70	60
71	41
72	31
73	42
74	43
75	66
76	44
77	34

n	a(n)
1	1
2	1
3	2
4	1
5	4
6	2
7	6
8	3
9	2
10	10
11	3
12	6
13	14
14	7
15	5
16	6
17	20
18	7
19	11
20	24
21	8
22	14
23	9
24	8
25	17
26	35
27	18
28	37
29	19
30	5
31	22
32	15
33	47
34	9
35	51
36	17
37	18
38	28
39	19
40	20
41	62
42	12
43	66
44	33
45	68
46	11
47	12
48	38
49	79
50	40
51	27
52	83
53	17
54	29
55	30
56	30
57	93
58	31
59	48
60	97
61	19
62	14
63	53
64	108
65	54
66	16
67	38
68	23
69	120
70	60
71	41
72	31
73	42
74	43
75	66
76	44
77	34