A386314 - cp's OEIS frontend

A386314 a(1) = 1 and thereafter a(n) is the smallest number k of the form 6*x+-1 not already in the sequence but where the reduced Collatz step A139391(k) is in the sequence.

n	a(n)
1	1
2	5
3	13
4	17
5	11
6	7
7	29
8	19
9	25
10	37
11	49
12	53
13	35
14	23
15	61
16	65
17	43
18	77
19	85
20	101
21	67
22	89
23	59
24	113
25	133
26	149
27	157
28	173
29	115
30	181
31	197
32	131
33	205
34	209
35	139
36	185
37	229
38	241
39	245
40	163
41	217
42	269
43	179
44	119
45	79
46	277
47	289
48	301
49	305
50	203
51	317
52	211
53	281
54	187
55	325
56	341
57	227
58	151
59	349
60	373

[1, 5, 13, 17, 11, 7, 29, 19, 25, 37, 49, 53, 35, 23, 61, 65, 43, 77, 85, 101, 67, 89, 59, 113, 133, 149, 157, 173, 115, 181, 197, 131, 205, 209, 139, 185, 229, 241, 245, 163, 217, 269, 179, 119, 79, 277, 289, 301, 305, 203, 317, 211, 281, 187, 325, 341, 227, 151, 349, 373]

cp's OEIS Frontend

A386314 a(1) = 1 and thereafter a(n) is the smallest number k of the form 6*x+-1 not already in the sequence but where the reduced Collatz step A139391(k) is in the sequence.

Table of values

List of values

n	a(n)
1	1
2	5
3	13
4	17
5	11
6	7
7	29
8	19
9	25
10	37
11	49
12	53
13	35
14	23
15	61
16	65
17	43
18	77
19	85
20	101
21	67
22	89
23	59
24	113
25	133
26	149
27	157
28	173
29	115
30	181
31	197
32	131
33	205
34	209
35	139
36	185
37	229
38	241
39	245
40	163
41	217
42	269
43	179
44	119
45	79
46	277
47	289
48	301
49	305
50	203
51	317
52	211
53	281
54	187
55	325
56	341
57	227
58	151
59	349
60	373

n	a(n)
1	1
2	5
3	13
4	17
5	11
6	7
7	29
8	19
9	25
10	37
11	49
12	53
13	35
14	23
15	61
16	65
17	43
18	77
19	85
20	101
21	67
22	89
23	59
24	113
25	133
26	149
27	157
28	173
29	115
30	181
31	197
32	131
33	205
34	209
35	139
36	185
37	229
38	241
39	245
40	163
41	217
42	269
43	179
44	119
45	79
46	277
47	289
48	301
49	305
50	203
51	317
52	211
53	281
54	187
55	325
56	341
57	227
58	151
59	349
60	373

n	a(n)
1	1
2	5
3	13
4	17
5	11
6	7
7	29
8	19
9	25
10	37
11	49
12	53
13	35
14	23
15	61
16	65
17	43
18	77
19	85
20	101
21	67
22	89
23	59
24	113
25	133
26	149
27	157
28	173
29	115
30	181
31	197
32	131
33	205
34	209
35	139
36	185
37	229
38	241
39	245
40	163
41	217
42	269
43	179
44	119
45	79
46	277
47	289
48	301
49	305
50	203
51	317
52	211
53	281
54	187
55	325
56	341
57	227
58	151
59	349
60	373