A275938 - cp's OEIS frontend

A275938 Numbers m such that d(m) is prime while sigma(m) is not prime (where d(m) = A000005(m) and sigma(m) = A000203(m)).

n	a(n)
1	3
2	5
3	7
4	11
5	13
6	17
7	19
8	23
9	29
10	31
11	37
12	41
13	43
14	47
15	49
16	53
17	59
18	61
19	67
20	71
21	73
22	79
23	81
24	83
25	89
26	97
27	101
28	103
29	107
30	109
31	113
32	121
33	127
34	131
35	137
36	139
37	149
38	151
39	157
40	163
41	167
42	169
43	173
44	179
45	181
46	191
47	193
48	197
49	199
50	211
51	223
52	227
53	229
54	233
55	239
56	241
57	251
58	257
59	263
60	269
61	271
62	277

[3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 49, 53, 59, 61, 67, 71, 73, 79, 81, 83, 89, 97, 101, 103, 107, 109, 113, 121, 127, 131, 137, 139, 149, 151, 157, 163, 167, 169, 173, 179, 181, 191, 193, 197, 199, 211, 223, 227, 229, 233, 239, 241, 251, 257, 263, 269, 271, 277]

cp's OEIS Frontend

A275938 Numbers m such that d(m) is prime while sigma(m) is not prime (where d(m) = A000005(m) and sigma(m) = A000203(m)).

Table of values

List of values

n	a(n)
1	3
2	5
3	7
4	11
5	13
6	17
7	19
8	23
9	29
10	31
11	37
12	41
13	43
14	47
15	49
16	53
17	59
18	61
19	67
20	71
21	73
22	79
23	81
24	83
25	89
26	97
27	101
28	103
29	107
30	109
31	113
32	121
33	127
34	131
35	137
36	139
37	149
38	151
39	157
40	163
41	167
42	169
43	173
44	179
45	181
46	191
47	193
48	197
49	199
50	211
51	223
52	227
53	229
54	233
55	239
56	241
57	251
58	257
59	263
60	269
61	271
62	277

n	a(n)
1	3
2	5
3	7
4	11
5	13
6	17
7	19
8	23
9	29
10	31
11	37
12	41
13	43
14	47
15	49
16	53
17	59
18	61
19	67
20	71
21	73
22	79
23	81
24	83
25	89
26	97
27	101
28	103
29	107
30	109
31	113
32	121
33	127
34	131
35	137
36	139
37	149
38	151
39	157
40	163
41	167
42	169
43	173
44	179
45	181
46	191
47	193
48	197
49	199
50	211
51	223
52	227
53	229
54	233
55	239
56	241
57	251
58	257
59	263
60	269
61	271
62	277

n	a(n)
1	3
2	5
3	7
4	11
5	13
6	17
7	19
8	23
9	29
10	31
11	37
12	41
13	43
14	47
15	49
16	53
17	59
18	61
19	67
20	71
21	73
22	79
23	81
24	83
25	89
26	97
27	101
28	103
29	107
30	109
31	113
32	121
33	127
34	131
35	137
36	139
37	149
38	151
39	157
40	163
41	167
42	169
43	173
44	179
45	181
46	191
47	193
48	197
49	199
50	211
51	223
52	227
53	229
54	233
55	239
56	241
57	251
58	257
59	263
60	269
61	271
62	277