A191121 - cp's OEIS frontend

A191121 Increasing sequence generated by these rules: a(1)=1, and if x is in a then 3x-1 and 4x-1 are in a.

n	a(n)
1	1
2	2
3	3
4	5
5	7
6	8
7	11
8	14
9	19
10	20
11	23
12	27
13	31
14	32
15	41
16	43
17	55
18	56
19	59
20	68
21	75
22	79
23	80
24	91
25	92
26	95
27	107
28	122
29	123
30	127
31	128
32	163
33	164
34	167
35	171
36	176
37	203
38	219
39	223
40	224
41	235
42	236
43	239
44	271
45	272
46	275
47	284
48	299
49	315
50	319
51	320
52	363
53	365
54	367
55	368
56	379
57	380
58	383
59	427
60	487
61	488
62	491
63	500
64	507
65	511
66	512
67	527
68	608
69	651
70	655
71	656
72	667
73	668

[1, 2, 3, 5, 7, 8, 11, 14, 19, 20, 23, 27, 31, 32, 41, 43, 55, 56, 59, 68, 75, 79, 80, 91, 92, 95, 107, 122, 123, 127, 128, 163, 164, 167, 171, 176, 203, 219, 223, 224, 235, 236, 239, 271, 272, 275, 284, 299, 315, 319, 320, 363, 365, 367, 368, 379, 380, 383, 427, 487, 488, 491, 500, 507, 511, 512, 527, 608, 651, 655, 656, 667, 668]

cp's OEIS Frontend

A191121 Increasing sequence generated by these rules: a(1)=1, and if x is in a then 3x-1 and 4x-1 are in a.

Table of values

List of values

n	a(n)
1	1
2	2
3	3
4	5
5	7
6	8
7	11
8	14
9	19
10	20
11	23
12	27
13	31
14	32
15	41
16	43
17	55
18	56
19	59
20	68
21	75
22	79
23	80
24	91
25	92
26	95
27	107
28	122
29	123
30	127
31	128
32	163
33	164
34	167
35	171
36	176
37	203
38	219
39	223
40	224
41	235
42	236
43	239
44	271
45	272
46	275
47	284
48	299
49	315
50	319
51	320
52	363
53	365
54	367
55	368
56	379
57	380
58	383
59	427
60	487
61	488
62	491
63	500
64	507
65	511
66	512
67	527
68	608
69	651
70	655
71	656
72	667
73	668

n	a(n)
1	1
2	2
3	3
4	5
5	7
6	8
7	11
8	14
9	19
10	20
11	23
12	27
13	31
14	32
15	41
16	43
17	55
18	56
19	59
20	68
21	75
22	79
23	80
24	91
25	92
26	95
27	107
28	122
29	123
30	127
31	128
32	163
33	164
34	167
35	171
36	176
37	203
38	219
39	223
40	224
41	235
42	236
43	239
44	271
45	272
46	275
47	284
48	299
49	315
50	319
51	320
52	363
53	365
54	367
55	368
56	379
57	380
58	383
59	427
60	487
61	488
62	491
63	500
64	507
65	511
66	512
67	527
68	608
69	651
70	655
71	656
72	667
73	668

n	a(n)
1	1
2	2
3	3
4	5
5	7
6	8
7	11
8	14
9	19
10	20
11	23
12	27
13	31
14	32
15	41
16	43
17	55
18	56
19	59
20	68
21	75
22	79
23	80
24	91
25	92
26	95
27	107
28	122
29	123
30	127
31	128
32	163
33	164
34	167
35	171
36	176
37	203
38	219
39	223
40	224
41	235
42	236
43	239
44	271
45	272
46	275
47	284
48	299
49	315
50	319
51	320
52	363
53	365
54	367
55	368
56	379
57	380
58	383
59	427
60	487
61	488
62	491
63	500
64	507
65	511
66	512
67	527
68	608
69	651
70	655
71	656
72	667
73	668