A258996 - cp's OEIS frontend

A258996 Permutation of the positive integers: this permutation transforms the enumeration system of positive irreducible fractions A002487/A002487' (Calkin-Wilf) into the enumeration system A162911/A162912 (Drib), and vice versa.

n	a(n)
1	1
2	2
3	3
4	6
5	7
6	4
7	5
8	10
9	11
10	8
11	9
12	14
13	15
14	12
15	13
16	26
17	27
18	24
19	25
20	30
21	31
22	28
23	29
24	18
25	19
26	16
27	17
28	22
29	23
30	20
31	21
32	42
33	43
34	40
35	41
36	46
37	47
38	44
39	45
40	34
41	35
42	32
43	33
44	38
45	39
46	36
47	37
48	58
49	59
50	56
51	57
52	62
53	63
54	60
55	61
56	50
57	51
58	48
59	49
60	54
61	55
62	52
63	53

[1, 2, 3, 6, 7, 4, 5, 10, 11, 8, 9, 14, 15, 12, 13, 26, 27, 24, 25, 30, 31, 28, 29, 18, 19, 16, 17, 22, 23, 20, 21, 42, 43, 40, 41, 46, 47, 44, 45, 34, 35, 32, 33, 38, 39, 36, 37, 58, 59, 56, 57, 62, 63, 60, 61, 50, 51, 48, 49, 54, 55, 52, 53]

cp's OEIS Frontend

A258996 Permutation of the positive integers: this permutation transforms the enumeration system of positive irreducible fractions A002487/A002487' (Calkin-Wilf) into the enumeration system A162911/A162912 (Drib), and vice versa.

Table of values

List of values

n	a(n)
1	1
2	2
3	3
4	6
5	7
6	4
7	5
8	10
9	11
10	8
11	9
12	14
13	15
14	12
15	13
16	26
17	27
18	24
19	25
20	30
21	31
22	28
23	29
24	18
25	19
26	16
27	17
28	22
29	23
30	20
31	21
32	42
33	43
34	40
35	41
36	46
37	47
38	44
39	45
40	34
41	35
42	32
43	33
44	38
45	39
46	36
47	37
48	58
49	59
50	56
51	57
52	62
53	63
54	60
55	61
56	50
57	51
58	48
59	49
60	54
61	55
62	52
63	53

n	a(n)
1	1
2	2
3	3
4	6
5	7
6	4
7	5
8	10
9	11
10	8
11	9
12	14
13	15
14	12
15	13
16	26
17	27
18	24
19	25
20	30
21	31
22	28
23	29
24	18
25	19
26	16
27	17
28	22
29	23
30	20
31	21
32	42
33	43
34	40
35	41
36	46
37	47
38	44
39	45
40	34
41	35
42	32
43	33
44	38
45	39
46	36
47	37
48	58
49	59
50	56
51	57
52	62
53	63
54	60
55	61
56	50
57	51
58	48
59	49
60	54
61	55
62	52
63	53

n	a(n)
1	1
2	2
3	3
4	6
5	7
6	4
7	5
8	10
9	11
10	8
11	9
12	14
13	15
14	12
15	13
16	26
17	27
18	24
19	25
20	30
21	31
22	28
23	29
24	18
25	19
26	16
27	17
28	22
29	23
30	20
31	21
32	42
33	43
34	40
35	41
36	46
37	47
38	44
39	45
40	34
41	35
42	32
43	33
44	38
45	39
46	36
47	37
48	58
49	59
50	56
51	57
52	62
53	63
54	60
55	61
56	50
57	51
58	48
59	49
60	54
61	55
62	52
63	53