A048673 - cp's OEIS frontend

A048673 Permutation of natural numbers: a(n) = (A003961(n)+1) / 2 [where A003961(n) shifts the prime factorization of n one step towards larger primes].

n	a(n)
1	1
2	2
3	3
4	5
5	4
6	8
7	6
8	14
9	13
10	11
11	7
12	23
13	9
14	17
15	18
16	41
17	10
18	38
19	12
20	32
21	28
22	20
23	15
24	68
25	25
26	26
27	63
28	50
29	16
30	53
31	19
32	122
33	33
34	29
35	39
36	113
37	21
38	35
39	43
40	95
41	22
42	83
43	24
44	59
45	88
46	44
47	27
48	203
49	61
50	74
51	48
52	77
53	30
54	188
55	46
56	149
57	58
58	47
59	31
60	158
61	34
62	56
63	138
64	365
65	60
66	98
67	36
68	86
69	73

[1, 2, 3, 5, 4, 8, 6, 14, 13, 11, 7, 23, 9, 17, 18, 41, 10, 38, 12, 32, 28, 20, 15, 68, 25, 26, 63, 50, 16, 53, 19, 122, 33, 29, 39, 113, 21, 35, 43, 95, 22, 83, 24, 59, 88, 44, 27, 203, 61, 74, 48, 77, 30, 188, 46, 149, 58, 47, 31, 158, 34, 56, 138, 365, 60, 98, 36, 86, 73]

cp's OEIS Frontend

A048673 Permutation of natural numbers: a(n) = (A003961(n)+1) / 2 [where A003961(n) shifts the prime factorization of n one step towards larger primes].

Table of values

List of values

n	a(n)
1	1
2	2
3	3
4	5
5	4
6	8
7	6
8	14
9	13
10	11
11	7
12	23
13	9
14	17
15	18
16	41
17	10
18	38
19	12
20	32
21	28
22	20
23	15
24	68
25	25
26	26
27	63
28	50
29	16
30	53
31	19
32	122
33	33
34	29
35	39
36	113
37	21
38	35
39	43
40	95
41	22
42	83
43	24
44	59
45	88
46	44
47	27
48	203
49	61
50	74
51	48
52	77
53	30
54	188
55	46
56	149
57	58
58	47
59	31
60	158
61	34
62	56
63	138
64	365
65	60
66	98
67	36
68	86
69	73

n	a(n)
1	1
2	2
3	3
4	5
5	4
6	8
7	6
8	14
9	13
10	11
11	7
12	23
13	9
14	17
15	18
16	41
17	10
18	38
19	12
20	32
21	28
22	20
23	15
24	68
25	25
26	26
27	63
28	50
29	16
30	53
31	19
32	122
33	33
34	29
35	39
36	113
37	21
38	35
39	43
40	95
41	22
42	83
43	24
44	59
45	88
46	44
47	27
48	203
49	61
50	74
51	48
52	77
53	30
54	188
55	46
56	149
57	58
58	47
59	31
60	158
61	34
62	56
63	138
64	365
65	60
66	98
67	36
68	86
69	73

n	a(n)
1	1
2	2
3	3
4	5
5	4
6	8
7	6
8	14
9	13
10	11
11	7
12	23
13	9
14	17
15	18
16	41
17	10
18	38
19	12
20	32
21	28
22	20
23	15
24	68
25	25
26	26
27	63
28	50
29	16
30	53
31	19
32	122
33	33
34	29
35	39
36	113
37	21
38	35
39	43
40	95
41	22
42	83
43	24
44	59
45	88
46	44
47	27
48	203
49	61
50	74
51	48
52	77
53	30
54	188
55	46
56	149
57	58
58	47
59	31
60	158
61	34
62	56
63	138
64	365
65	60
66	98
67	36
68	86
69	73