A257688 - cp's OEIS frontend

A257688 After 1, all numbers that are either primes in Z or whose binary representation encodes a polynomial irreducible over GF(2).

n	a(n)
1	1
2	2
3	3
4	5
5	7
6	11
7	13
8	17
9	19
10	23
11	25
12	29
13	31
14	37
15	41
16	43
17	47
18	53
19	55
20	59
21	61
22	67
23	71
24	73
25	79
26	83
27	87
28	89
29	91
30	97
31	101
32	103
33	107
34	109
35	113
36	115
37	117
38	127
39	131
40	137
41	139
42	143
43	145
44	149
45	151
46	157
47	163
48	167
49	171
50	173
51	179
52	181
53	185
54	191
55	193
56	197
57	199
58	203
59	211
60	213
61	223
62	227
63	229
64	233
65	239
66	241
67	247
68	251
69	253
70	257
71	263
72	269

[1, 2, 3, 5, 7, 11, 13, 17, 19, 23, 25, 29, 31, 37, 41, 43, 47, 53, 55, 59, 61, 67, 71, 73, 79, 83, 87, 89, 91, 97, 101, 103, 107, 109, 113, 115, 117, 127, 131, 137, 139, 143, 145, 149, 151, 157, 163, 167, 171, 173, 179, 181, 185, 191, 193, 197, 199, 203, 211, 213, 223, 227, 229, 233, 239, 241, 247, 251, 253, 257, 263, 269]

cp's OEIS Frontend

A257688 After 1, all numbers that are either primes in Z or whose binary representation encodes a polynomial irreducible over GF(2).

Table of values

List of values

n	a(n)
1	1
2	2
3	3
4	5
5	7
6	11
7	13
8	17
9	19
10	23
11	25
12	29
13	31
14	37
15	41
16	43
17	47
18	53
19	55
20	59
21	61
22	67
23	71
24	73
25	79
26	83
27	87
28	89
29	91
30	97
31	101
32	103
33	107
34	109
35	113
36	115
37	117
38	127
39	131
40	137
41	139
42	143
43	145
44	149
45	151
46	157
47	163
48	167
49	171
50	173
51	179
52	181
53	185
54	191
55	193
56	197
57	199
58	203
59	211
60	213
61	223
62	227
63	229
64	233
65	239
66	241
67	247
68	251
69	253
70	257
71	263
72	269

n	a(n)
1	1
2	2
3	3
4	5
5	7
6	11
7	13
8	17
9	19
10	23
11	25
12	29
13	31
14	37
15	41
16	43
17	47
18	53
19	55
20	59
21	61
22	67
23	71
24	73
25	79
26	83
27	87
28	89
29	91
30	97
31	101
32	103
33	107
34	109
35	113
36	115
37	117
38	127
39	131
40	137
41	139
42	143
43	145
44	149
45	151
46	157
47	163
48	167
49	171
50	173
51	179
52	181
53	185
54	191
55	193
56	197
57	199
58	203
59	211
60	213
61	223
62	227
63	229
64	233
65	239
66	241
67	247
68	251
69	253
70	257
71	263
72	269

n	a(n)
1	1
2	2
3	3
4	5
5	7
6	11
7	13
8	17
9	19
10	23
11	25
12	29
13	31
14	37
15	41
16	43
17	47
18	53
19	55
20	59
21	61
22	67
23	71
24	73
25	79
26	83
27	87
28	89
29	91
30	97
31	101
32	103
33	107
34	109
35	113
36	115
37	117
38	127
39	131
40	137
41	139
42	143
43	145
44	149
45	151
46	157
47	163
48	167
49	171
50	173
51	179
52	181
53	185
54	191
55	193
56	197
57	199
58	203
59	211
60	213
61	223
62	227
63	229
64	233
65	239
66	241
67	247
68	251
69	253
70	257
71	263
72	269