A140489 - cp's OEIS frontend

A140489 Numbers that cannot be part of the trajectory of any number under repeated application of the map: n -> n + second-smallest number that does not divide n, unless they are the first term of the trajectory.

n	a(n)
1	1
2	2
3	3
4	5
5	12
6	15
7	17
8	24
9	27
10	29
11	35
12	36
13	39
14	41
15	45
16	48
17	51
18	53
19	60
20	63
21	65
22	72
23	75
24	77
25	84
26	87
27	89
28	95
29	96
30	99
31	101
32	105
33	108
34	111
35	113
36	120
37	123
38	125
39	132
40	135
41	137
42	144
43	147
44	149
45	155
46	156
47	159
48	161
49	165
50	168
51	171
52	173
53	180
54	183
55	185
56	192
57	195

[1, 2, 3, 5, 12, 15, 17, 24, 27, 29, 35, 36, 39, 41, 45, 48, 51, 53, 60, 63, 65, 72, 75, 77, 84, 87, 89, 95, 96, 99, 101, 105, 108, 111, 113, 120, 123, 125, 132, 135, 137, 144, 147, 149, 155, 156, 159, 161, 165, 168, 171, 173, 180, 183, 185, 192, 195]

cp's OEIS Frontend

A140489 Numbers that cannot be part of the trajectory of any number under repeated application of the map: n -> n + second-smallest number that does not divide n, unless they are the first term of the trajectory.

Table of values

List of values

n	a(n)
1	1
2	2
3	3
4	5
5	12
6	15
7	17
8	24
9	27
10	29
11	35
12	36
13	39
14	41
15	45
16	48
17	51
18	53
19	60
20	63
21	65
22	72
23	75
24	77
25	84
26	87
27	89
28	95
29	96
30	99
31	101
32	105
33	108
34	111
35	113
36	120
37	123
38	125
39	132
40	135
41	137
42	144
43	147
44	149
45	155
46	156
47	159
48	161
49	165
50	168
51	171
52	173
53	180
54	183
55	185
56	192
57	195

n	a(n)
1	1
2	2
3	3
4	5
5	12
6	15
7	17
8	24
9	27
10	29
11	35
12	36
13	39
14	41
15	45
16	48
17	51
18	53
19	60
20	63
21	65
22	72
23	75
24	77
25	84
26	87
27	89
28	95
29	96
30	99
31	101
32	105
33	108
34	111
35	113
36	120
37	123
38	125
39	132
40	135
41	137
42	144
43	147
44	149
45	155
46	156
47	159
48	161
49	165
50	168
51	171
52	173
53	180
54	183
55	185
56	192
57	195

n	a(n)
1	1
2	2
3	3
4	5
5	12
6	15
7	17
8	24
9	27
10	29
11	35
12	36
13	39
14	41
15	45
16	48
17	51
18	53
19	60
20	63
21	65
22	72
23	75
24	77
25	84
26	87
27	89
28	95
29	96
30	99
31	101
32	105
33	108
34	111
35	113
36	120
37	123
38	125
39	132
40	135
41	137
42	144
43	147
44	149
45	155
46	156
47	159
48	161
49	165
50	168
51	171
52	173
53	180
54	183
55	185
56	192
57	195