A207675 - cp's OEIS frontend

A207675 Numbers such that not all divisors occur in their Collatz trajectories.

n	a(n)
1	9
2	15
3	18
4	21
5	27
6	30
7	33
8	35
9	36
10	39
11	42
12	45
13	51
14	54
15	55
16	57
17	60
18	63
19	66
20	69
21	70
22	72
23	75
24	77
25	78
26	81
27	84
28	85
29	87
30	90
31	91
32	93
33	95
34	96
35	99
36	102
37	105
38	108
39	110
40	111
41	114
42	115
43	117
44	119
45	120
46	121
47	123
48	125
49	126
50	129
51	132
52	133
53	135
54	138
55	140
56	141
57	143
58	144
59	145

[9, 15, 18, 21, 27, 30, 33, 35, 36, 39, 42, 45, 51, 54, 55, 57, 60, 63, 66, 69, 70, 72, 75, 77, 78, 81, 84, 85, 87, 90, 91, 93, 95, 96, 99, 102, 105, 108, 110, 111, 114, 115, 117, 119, 120, 121, 123, 125, 126, 129, 132, 133, 135, 138, 140, 141, 143, 144, 145]

cp's OEIS Frontend

A207675 Numbers such that not all divisors occur in their Collatz trajectories.

Table of values

List of values

n	a(n)
1	9
2	15
3	18
4	21
5	27
6	30
7	33
8	35
9	36
10	39
11	42
12	45
13	51
14	54
15	55
16	57
17	60
18	63
19	66
20	69
21	70
22	72
23	75
24	77
25	78
26	81
27	84
28	85
29	87
30	90
31	91
32	93
33	95
34	96
35	99
36	102
37	105
38	108
39	110
40	111
41	114
42	115
43	117
44	119
45	120
46	121
47	123
48	125
49	126
50	129
51	132
52	133
53	135
54	138
55	140
56	141
57	143
58	144
59	145

n	a(n)
1	9
2	15
3	18
4	21
5	27
6	30
7	33
8	35
9	36
10	39
11	42
12	45
13	51
14	54
15	55
16	57
17	60
18	63
19	66
20	69
21	70
22	72
23	75
24	77
25	78
26	81
27	84
28	85
29	87
30	90
31	91
32	93
33	95
34	96
35	99
36	102
37	105
38	108
39	110
40	111
41	114
42	115
43	117
44	119
45	120
46	121
47	123
48	125
49	126
50	129
51	132
52	133
53	135
54	138
55	140
56	141
57	143
58	144
59	145

n	a(n)
1	9
2	15
3	18
4	21
5	27
6	30
7	33
8	35
9	36
10	39
11	42
12	45
13	51
14	54
15	55
16	57
17	60
18	63
19	66
20	69
21	70
22	72
23	75
24	77
25	78
26	81
27	84
28	85
29	87
30	90
31	91
32	93
33	95
34	96
35	99
36	102
37	105
38	108
39	110
40	111
41	114
42	115
43	117
44	119
45	120
46	121
47	123
48	125
49	126
50	129
51	132
52	133
53	135
54	138
55	140
56	141
57	143
58	144
59	145