A174090 - cp's OEIS frontend

A174090 Powers of 2 and odd primes; alternatively, numbers that cannot be written as a sum of at least three consecutive positive integers.

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	7
7	8
8	11
9	13
10	16
11	17
12	19
13	23
14	29
15	31
16	32
17	37
18	41
19	43
20	47
21	53
22	59
23	61
24	64
25	67
26	71
27	73
28	79
29	83
30	89
31	97
32	101
33	103
34	107
35	109
36	113
37	127
38	128
39	131
40	137
41	139
42	149
43	151
44	157
45	163
46	167
47	173
48	179
49	181
50	191
51	193
52	197
53	199
54	211
55	223
56	227
57	229
58	233
59	239
60	241
61	251
62	256

[1, 2, 3, 4, 5, 7, 8, 11, 13, 16, 17, 19, 23, 29, 31, 32, 37, 41, 43, 47, 53, 59, 61, 64, 67, 71, 73, 79, 83, 89, 97, 101, 103, 107, 109, 113, 127, 128, 131, 137, 139, 149, 151, 157, 163, 167, 173, 179, 181, 191, 193, 197, 199, 211, 223, 227, 229, 233, 239, 241, 251, 256]

cp's OEIS Frontend

A174090 Powers of 2 and odd primes; alternatively, numbers that cannot be written as a sum of at least three consecutive positive integers.

Table of values

List of values

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	7
7	8
8	11
9	13
10	16
11	17
12	19
13	23
14	29
15	31
16	32
17	37
18	41
19	43
20	47
21	53
22	59
23	61
24	64
25	67
26	71
27	73
28	79
29	83
30	89
31	97
32	101
33	103
34	107
35	109
36	113
37	127
38	128
39	131
40	137
41	139
42	149
43	151
44	157
45	163
46	167
47	173
48	179
49	181
50	191
51	193
52	197
53	199
54	211
55	223
56	227
57	229
58	233
59	239
60	241
61	251
62	256

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	7
7	8
8	11
9	13
10	16
11	17
12	19
13	23
14	29
15	31
16	32
17	37
18	41
19	43
20	47
21	53
22	59
23	61
24	64
25	67
26	71
27	73
28	79
29	83
30	89
31	97
32	101
33	103
34	107
35	109
36	113
37	127
38	128
39	131
40	137
41	139
42	149
43	151
44	157
45	163
46	167
47	173
48	179
49	181
50	191
51	193
52	197
53	199
54	211
55	223
56	227
57	229
58	233
59	239
60	241
61	251
62	256

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	7
7	8
8	11
9	13
10	16
11	17
12	19
13	23
14	29
15	31
16	32
17	37
18	41
19	43
20	47
21	53
22	59
23	61
24	64
25	67
26	71
27	73
28	79
29	83
30	89
31	97
32	101
33	103
34	107
35	109
36	113
37	127
38	128
39	131
40	137
41	139
42	149
43	151
44	157
45	163
46	167
47	173
48	179
49	181
50	191
51	193
52	197
53	199
54	211
55	223
56	227
57	229
58	233
59	239
60	241
61	251
62	256