A256581 - cp's OEIS frontend

A256581 Number of conditions on m under which m^n + (m+1)^n + ... + (m+k)^n is composite for every k>=1 (see comment).

n	a(n)
1	2
2	3
3	2
4	7
5	5
6	7
7	7
8	11
9	5
10	7
11	7
12	31
13	23
14	11
15	9
16	15
17	17
18	31
19	31
20	47
21	23
22	15
23	29
24	47
25	23
26	15
27	7
28	15
29	11
30	31
31	47
32	95
33	47
34	15
35	11
36	127
37	95
38	47
39	39
40	63
41	71
42	63
43	63
44	95
45	47
46	31
47	71
48	95
49	71
50	47
51	31
52	31
53	47
54	63
55	39
56	47
57	23
58	15
59	23
60	255
61	191
62	127
63	111
64	95
65	71
66	127

[2, 3, 2, 7, 5, 7, 7, 11, 5, 7, 7, 31, 23, 11, 9, 15, 17, 31, 31, 47, 23, 15, 29, 47, 23, 15, 7, 15, 11, 31, 47, 95, 47, 15, 11, 127, 95, 47, 39, 63, 71, 63, 63, 95, 47, 31, 71, 95, 71, 47, 31, 31, 47, 63, 39, 47, 23, 15, 23, 255, 191, 127, 111, 95, 71, 127]

cp's OEIS Frontend

A256581 Number of conditions on m under which m^n + (m+1)^n + ... + (m+k)^n is composite for every k>=1 (see comment).

Table of values

List of values

n	a(n)
1	2
2	3
3	2
4	7
5	5
6	7
7	7
8	11
9	5
10	7
11	7
12	31
13	23
14	11
15	9
16	15
17	17
18	31
19	31
20	47
21	23
22	15
23	29
24	47
25	23
26	15
27	7
28	15
29	11
30	31
31	47
32	95
33	47
34	15
35	11
36	127
37	95
38	47
39	39
40	63
41	71
42	63
43	63
44	95
45	47
46	31
47	71
48	95
49	71
50	47
51	31
52	31
53	47
54	63
55	39
56	47
57	23
58	15
59	23
60	255
61	191
62	127
63	111
64	95
65	71
66	127

n	a(n)
1	2
2	3
3	2
4	7
5	5
6	7
7	7
8	11
9	5
10	7
11	7
12	31
13	23
14	11
15	9
16	15
17	17
18	31
19	31
20	47
21	23
22	15
23	29
24	47
25	23
26	15
27	7
28	15
29	11
30	31
31	47
32	95
33	47
34	15
35	11
36	127
37	95
38	47
39	39
40	63
41	71
42	63
43	63
44	95
45	47
46	31
47	71
48	95
49	71
50	47
51	31
52	31
53	47
54	63
55	39
56	47
57	23
58	15
59	23
60	255
61	191
62	127
63	111
64	95
65	71
66	127

n	a(n)
1	2
2	3
3	2
4	7
5	5
6	7
7	7
8	11
9	5
10	7
11	7
12	31
13	23
14	11
15	9
16	15
17	17
18	31
19	31
20	47
21	23
22	15
23	29
24	47
25	23
26	15
27	7
28	15
29	11
30	31
31	47
32	95
33	47
34	15
35	11
36	127
37	95
38	47
39	39
40	63
41	71
42	63
43	63
44	95
45	47
46	31
47	71
48	95
49	71
50	47
51	31
52	31
53	47
54	63
55	39
56	47
57	23
58	15
59	23
60	255
61	191
62	127
63	111
64	95
65	71
66	127