A064216 - cp's OEIS frontend

A064216 Replace each p^e with prevprime(p)^e in the prime factorization of odd numbers; inverse of sequence A048673 considered as a permutation of the natural numbers.

n	a(n)
1	1
2	2
3	3
4	5
5	4
6	7
7	11
8	6
9	13
10	17
11	10
12	19
13	9
14	8
15	23
16	29
17	14
18	15
19	31
20	22
21	37
22	41
23	12
24	43
25	25
26	26
27	47
28	21
29	34
30	53
31	59
32	20
33	33
34	61
35	38
36	67
37	71
38	18
39	35
40	73
41	16
42	79
43	39
44	46
45	83
46	55
47	58
48	51
49	89
50	28
51	97
52	101
53	30
54	103
55	107
56	62
57	109
58	57
59	44
60	65
61	49
62	74
63	27
64	113
65	82
66	127
67	85
68	24
69	131

[1, 2, 3, 5, 4, 7, 11, 6, 13, 17, 10, 19, 9, 8, 23, 29, 14, 15, 31, 22, 37, 41, 12, 43, 25, 26, 47, 21, 34, 53, 59, 20, 33, 61, 38, 67, 71, 18, 35, 73, 16, 79, 39, 46, 83, 55, 58, 51, 89, 28, 97, 101, 30, 103, 107, 62, 109, 57, 44, 65, 49, 74, 27, 113, 82, 127, 85, 24, 131]

cp's OEIS Frontend

A064216 Replace each p^e with prevprime(p)^e in the prime factorization of odd numbers; inverse of sequence A048673 considered as a permutation of the natural numbers.

Table of values

List of values

n	a(n)
1	1
2	2
3	3
4	5
5	4
6	7
7	11
8	6
9	13
10	17
11	10
12	19
13	9
14	8
15	23
16	29
17	14
18	15
19	31
20	22
21	37
22	41
23	12
24	43
25	25
26	26
27	47
28	21
29	34
30	53
31	59
32	20
33	33
34	61
35	38
36	67
37	71
38	18
39	35
40	73
41	16
42	79
43	39
44	46
45	83
46	55
47	58
48	51
49	89
50	28
51	97
52	101
53	30
54	103
55	107
56	62
57	109
58	57
59	44
60	65
61	49
62	74
63	27
64	113
65	82
66	127
67	85
68	24
69	131

n	a(n)
1	1
2	2
3	3
4	5
5	4
6	7
7	11
8	6
9	13
10	17
11	10
12	19
13	9
14	8
15	23
16	29
17	14
18	15
19	31
20	22
21	37
22	41
23	12
24	43
25	25
26	26
27	47
28	21
29	34
30	53
31	59
32	20
33	33
34	61
35	38
36	67
37	71
38	18
39	35
40	73
41	16
42	79
43	39
44	46
45	83
46	55
47	58
48	51
49	89
50	28
51	97
52	101
53	30
54	103
55	107
56	62
57	109
58	57
59	44
60	65
61	49
62	74
63	27
64	113
65	82
66	127
67	85
68	24
69	131

n	a(n)
1	1
2	2
3	3
4	5
5	4
6	7
7	11
8	6
9	13
10	17
11	10
12	19
13	9
14	8
15	23
16	29
17	14
18	15
19	31
20	22
21	37
22	41
23	12
24	43
25	25
26	26
27	47
28	21
29	34
30	53
31	59
32	20
33	33
34	61
35	38
36	67
37	71
38	18
39	35
40	73
41	16
42	79
43	39
44	46
45	83
46	55
47	58
48	51
49	89
50	28
51	97
52	101
53	30
54	103
55	107
56	62
57	109
58	57
59	44
60	65
61	49
62	74
63	27
64	113
65	82
66	127
67	85
68	24
69	131