A117386 - cp's OEIS frontend

A117386 Positive integers, each occurring twice in the sequence, such that a(n) = a(k) when n+k = 6*a(n), starting with a(1)=1 and filling the next vacant position with the smallest unused number.

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

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

cp's OEIS Frontend

A117386 Positive integers, each occurring twice in the sequence, such that a(n) = a(k) when n+k = 6*a(n), starting with a(1)=1 and filling the next vacant position with the smallest unused number.

Table of values

List of values

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

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

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