A246165 - cp's OEIS frontend

A246165 Permutation of natural numbers: a(1) = 1, a(n) = A064989(n)-th integer among those positive integers not occurring earlier in the sequence. [A064989(n) shifts the prime factorization of n one step right].

n	a(n)
1	1
2	2
3	4
4	3
5	7
6	6
7	11
8	5
9	12
10	10
11	17
12	9
13	23
14	16
15	19
16	8
17	29
18	18
19	35
20	15
21	28
22	25
23	41
24	14
25	31
26	34
27	30
28	24
29	51
30	27
31	59
32	13
33	44
34	43
35	47
36	26
37	67
38	52
39	58
40	22
41	77
42	42
43	83
44	38
45	49
46	61
47	89
48	21
49	70
50	46
51	73
52	53
53	99
54	45
55	69
56	37
57	88
58	75
59	111
60	40
61	119
62	85
63	72
64	20
65	94
66	64
67	127
68	63
69	103
70	68
71	137
72	39
73	143
74	97
75	79
76	78
77	106
78	87
79	151
80	36

[1, 2, 4, 3, 7, 6, 11, 5, 12, 10, 17, 9, 23, 16, 19, 8, 29, 18, 35, 15, 28, 25, 41, 14, 31, 34, 30, 24, 51, 27, 59, 13, 44, 43, 47, 26, 67, 52, 58, 22, 77, 42, 83, 38, 49, 61, 89, 21, 70, 46, 73, 53, 99, 45, 69, 37, 88, 75, 111, 40, 119, 85, 72, 20, 94, 64, 127, 63, 103, 68, 137, 39, 143, 97, 79, 78, 106, 87, 151, 36]

cp's OEIS Frontend

A246165 Permutation of natural numbers: a(1) = 1, a(n) = A064989(n)-th integer among those positive integers not occurring earlier in the sequence. [A064989(n) shifts the prime factorization of n one step right].

Table of values

List of values

n	a(n)
1	1
2	2
3	4
4	3
5	7
6	6
7	11
8	5
9	12
10	10
11	17
12	9
13	23
14	16
15	19
16	8
17	29
18	18
19	35
20	15
21	28
22	25
23	41
24	14
25	31
26	34
27	30
28	24
29	51
30	27
31	59
32	13
33	44
34	43
35	47
36	26
37	67
38	52
39	58
40	22
41	77
42	42
43	83
44	38
45	49
46	61
47	89
48	21
49	70
50	46
51	73
52	53
53	99
54	45
55	69
56	37
57	88
58	75
59	111
60	40
61	119
62	85
63	72
64	20
65	94
66	64
67	127
68	63
69	103
70	68
71	137
72	39
73	143
74	97
75	79
76	78
77	106
78	87
79	151
80	36

n	a(n)
1	1
2	2
3	4
4	3
5	7
6	6
7	11
8	5
9	12
10	10
11	17
12	9
13	23
14	16
15	19
16	8
17	29
18	18
19	35
20	15
21	28
22	25
23	41
24	14
25	31
26	34
27	30
28	24
29	51
30	27
31	59
32	13
33	44
34	43
35	47
36	26
37	67
38	52
39	58
40	22
41	77
42	42
43	83
44	38
45	49
46	61
47	89
48	21
49	70
50	46
51	73
52	53
53	99
54	45
55	69
56	37
57	88
58	75
59	111
60	40
61	119
62	85
63	72
64	20
65	94
66	64
67	127
68	63
69	103
70	68
71	137
72	39
73	143
74	97
75	79
76	78
77	106
78	87
79	151
80	36

n	a(n)
1	1
2	2
3	4
4	3
5	7
6	6
7	11
8	5
9	12
10	10
11	17
12	9
13	23
14	16
15	19
16	8
17	29
18	18
19	35
20	15
21	28
22	25
23	41
24	14
25	31
26	34
27	30
28	24
29	51
30	27
31	59
32	13
33	44
34	43
35	47
36	26
37	67
38	52
39	58
40	22
41	77
42	42
43	83
44	38
45	49
46	61
47	89
48	21
49	70
50	46
51	73
52	53
53	99
54	45
55	69
56	37
57	88
58	75
59	111
60	40
61	119
62	85
63	72
64	20
65	94
66	64
67	127
68	63
69	103
70	68
71	137
72	39
73	143
74	97
75	79
76	78
77	106
78	87
79	151
80	36