A267112 - cp's OEIS frontend

A267112 Permutation of natural numbers: a(1) = 1; a(2n) = A087686(1+a(n)), a(2n+1) = A088359(a(n)), where A088359 and A087686 = numbers that occur only once (resp. more than once) in A004001.

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	7
7	6
8	8
9	9
10	12
11	10
12	15
13	13
14	14
15	11
16	16
17	17
18	21
19	18
20	27
21	22
22	24
23	19
24	31
25	28
26	29
27	23
28	30
29	25
30	26
31	20
32	32
33	33
34	38
35	34
36	48
37	39
38	42
39	35
40	58
41	49
42	51
43	40
44	54
45	43
46	45
47	36
48	63
49	59
50	60
51	50
52	61
53	52
54	53
55	41
56	62
57	55
58	56
59	44
60	57
61	46
62	47
63	37
64	64
65	65
66	71
67	66
68	86
69	72
70	76
71	67
72	106
73	87
74	90
75	73
76	96
77	77
78	80
79	68
80	121
81	107
82	109
83	88

[1, 2, 3, 4, 5, 7, 6, 8, 9, 12, 10, 15, 13, 14, 11, 16, 17, 21, 18, 27, 22, 24, 19, 31, 28, 29, 23, 30, 25, 26, 20, 32, 33, 38, 34, 48, 39, 42, 35, 58, 49, 51, 40, 54, 43, 45, 36, 63, 59, 60, 50, 61, 52, 53, 41, 62, 55, 56, 44, 57, 46, 47, 37, 64, 65, 71, 66, 86, 72, 76, 67, 106, 87, 90, 73, 96, 77, 80, 68, 121, 107, 109, 88]

cp's OEIS Frontend

A267112 Permutation of natural numbers: a(1) = 1; a(2n) = A087686(1+a(n)), a(2n+1) = A088359(a(n)), where A088359 and A087686 = numbers that occur only once (resp. more than once) in A004001.

Table of values

List of values

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	7
7	6
8	8
9	9
10	12
11	10
12	15
13	13
14	14
15	11
16	16
17	17
18	21
19	18
20	27
21	22
22	24
23	19
24	31
25	28
26	29
27	23
28	30
29	25
30	26
31	20
32	32
33	33
34	38
35	34
36	48
37	39
38	42
39	35
40	58
41	49
42	51
43	40
44	54
45	43
46	45
47	36
48	63
49	59
50	60
51	50
52	61
53	52
54	53
55	41
56	62
57	55
58	56
59	44
60	57
61	46
62	47
63	37
64	64
65	65
66	71
67	66
68	86
69	72
70	76
71	67
72	106
73	87
74	90
75	73
76	96
77	77
78	80
79	68
80	121
81	107
82	109
83	88

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	7
7	6
8	8
9	9
10	12
11	10
12	15
13	13
14	14
15	11
16	16
17	17
18	21
19	18
20	27
21	22
22	24
23	19
24	31
25	28
26	29
27	23
28	30
29	25
30	26
31	20
32	32
33	33
34	38
35	34
36	48
37	39
38	42
39	35
40	58
41	49
42	51
43	40
44	54
45	43
46	45
47	36
48	63
49	59
50	60
51	50
52	61
53	52
54	53
55	41
56	62
57	55
58	56
59	44
60	57
61	46
62	47
63	37
64	64
65	65
66	71
67	66
68	86
69	72
70	76
71	67
72	106
73	87
74	90
75	73
76	96
77	77
78	80
79	68
80	121
81	107
82	109
83	88

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	7
7	6
8	8
9	9
10	12
11	10
12	15
13	13
14	14
15	11
16	16
17	17
18	21
19	18
20	27
21	22
22	24
23	19
24	31
25	28
26	29
27	23
28	30
29	25
30	26
31	20
32	32
33	33
34	38
35	34
36	48
37	39
38	42
39	35
40	58
41	49
42	51
43	40
44	54
45	43
46	45
47	36
48	63
49	59
50	60
51	50
52	61
53	52
54	53
55	41
56	62
57	55
58	56
59	44
60	57
61	46
62	47
63	37
64	64
65	65
66	71
67	66
68	86
69	72
70	76
71	67
72	106
73	87
74	90
75	73
76	96
77	77
78	80
79	68
80	121
81	107
82	109
83	88