A264996 - cp's OEIS frontend

A264996 Self-inverse permutation of natural numbers: a(n) = (1/2) * (1+A263273(2n -1)) = 1 + A264985(n-1).

n	a(n)
1	1
2	2
3	4
4	3
5	5
6	10
7	7
8	11
9	13
10	6
11	8
12	12
13	9
14	14
15	28
16	19
17	29
18	37
19	16
20	20
21	34
22	25
23	32
24	31
25	22
26	38
27	40
28	15
29	17
30	33
31	24
32	23
33	30
34	21
35	35
36	39
37	18
38	26
39	36
40	27
41	41
42	82
43	55
44	83
45	109
46	46
47	56
48	100
49	73
50	86
51	91
52	64
53	110
54	118
55	43
56	47
57	97
58	70
59	59
60	88
61	61
62	101
63	115
64	52
65	74
66	106
67	79
68	95
69	85
70	58
71	92
72	112
73	49
74	65
75	103
76	76

[1, 2, 4, 3, 5, 10, 7, 11, 13, 6, 8, 12, 9, 14, 28, 19, 29, 37, 16, 20, 34, 25, 32, 31, 22, 38, 40, 15, 17, 33, 24, 23, 30, 21, 35, 39, 18, 26, 36, 27, 41, 82, 55, 83, 109, 46, 56, 100, 73, 86, 91, 64, 110, 118, 43, 47, 97, 70, 59, 88, 61, 101, 115, 52, 74, 106, 79, 95, 85, 58, 92, 112, 49, 65, 103, 76]

cp's OEIS Frontend

A264996 Self-inverse permutation of natural numbers: a(n) = (1/2) * (1+A263273(2n -1)) = 1 + A264985(n-1).

Table of values

List of values

n	a(n)
1	1
2	2
3	4
4	3
5	5
6	10
7	7
8	11
9	13
10	6
11	8
12	12
13	9
14	14
15	28
16	19
17	29
18	37
19	16
20	20
21	34
22	25
23	32
24	31
25	22
26	38
27	40
28	15
29	17
30	33
31	24
32	23
33	30
34	21
35	35
36	39
37	18
38	26
39	36
40	27
41	41
42	82
43	55
44	83
45	109
46	46
47	56
48	100
49	73
50	86
51	91
52	64
53	110
54	118
55	43
56	47
57	97
58	70
59	59
60	88
61	61
62	101
63	115
64	52
65	74
66	106
67	79
68	95
69	85
70	58
71	92
72	112
73	49
74	65
75	103
76	76

n	a(n)
1	1
2	2
3	4
4	3
5	5
6	10
7	7
8	11
9	13
10	6
11	8
12	12
13	9
14	14
15	28
16	19
17	29
18	37
19	16
20	20
21	34
22	25
23	32
24	31
25	22
26	38
27	40
28	15
29	17
30	33
31	24
32	23
33	30
34	21
35	35
36	39
37	18
38	26
39	36
40	27
41	41
42	82
43	55
44	83
45	109
46	46
47	56
48	100
49	73
50	86
51	91
52	64
53	110
54	118
55	43
56	47
57	97
58	70
59	59
60	88
61	61
62	101
63	115
64	52
65	74
66	106
67	79
68	95
69	85
70	58
71	92
72	112
73	49
74	65
75	103
76	76

n	a(n)
1	1
2	2
3	4
4	3
5	5
6	10
7	7
8	11
9	13
10	6
11	8
12	12
13	9
14	14
15	28
16	19
17	29
18	37
19	16
20	20
21	34
22	25
23	32
24	31
25	22
26	38
27	40
28	15
29	17
30	33
31	24
32	23
33	30
34	21
35	35
36	39
37	18
38	26
39	36
40	27
41	41
42	82
43	55
44	83
45	109
46	46
47	56
48	100
49	73
50	86
51	91
52	64
53	110
54	118
55	43
56	47
57	97
58	70
59	59
60	88
61	61
62	101
63	115
64	52
65	74
66	106
67	79
68	95
69	85
70	58
71	92
72	112
73	49
74	65
75	103
76	76