A277859 - cp's OEIS frontend

A277859 Least k > 1 such that 1^(k-1) + 2^(k-1) + 3^(k-1) + … + (k-1)^(k-1) - n == 0 (mod k).

n	a(n)
1	2
2	3
3	2
4	4
5	2
6	7
7	2
8	3
9	2
10	11
11	2
12	4
13	2
14	3
15	2
16	4
17	2
18	19
19	2
20	3
21	2
22	23
23	2
24	4
25	2
26	3
27	2
28	4
29	2
30	31
31	2
32	3
33	2
34	5
35	2
36	4
37	2
38	3
39	2
40	4
41	2
42	9
43	2
44	3
45	2
46	47
47	2
48	4
49	2
50	3
51	2
52	4
53	2
54	5
55	2
56	3
57	2
58	59
59	2
60	4
61	2
62	3
63	2
64	4
65	2
66	45
67	2
68	3
69	2
70	15
71	2
72	4
73	2
74	3
75	2
76	4
77	2
78	9
79	2
80	3
81	2
82	83
83	2
84	4
85	2

[2, 3, 2, 4, 2, 7, 2, 3, 2, 11, 2, 4, 2, 3, 2, 4, 2, 19, 2, 3, 2, 23, 2, 4, 2, 3, 2, 4, 2, 31, 2, 3, 2, 5, 2, 4, 2, 3, 2, 4, 2, 9, 2, 3, 2, 47, 2, 4, 2, 3, 2, 4, 2, 5, 2, 3, 2, 59, 2, 4, 2, 3, 2, 4, 2, 45, 2, 3, 2, 15, 2, 4, 2, 3, 2, 4, 2, 9, 2, 3, 2, 83, 2, 4, 2]

cp's OEIS Frontend

A277859 Least k > 1 such that 1^(k-1) + 2^(k-1) + 3^(k-1) + … + (k-1)^(k-1) - n == 0 (mod k).

Table of values

List of values

n	a(n)
1	2
2	3
3	2
4	4
5	2
6	7
7	2
8	3
9	2
10	11
11	2
12	4
13	2
14	3
15	2
16	4
17	2
18	19
19	2
20	3
21	2
22	23
23	2
24	4
25	2
26	3
27	2
28	4
29	2
30	31
31	2
32	3
33	2
34	5
35	2
36	4
37	2
38	3
39	2
40	4
41	2
42	9
43	2
44	3
45	2
46	47
47	2
48	4
49	2
50	3
51	2
52	4
53	2
54	5
55	2
56	3
57	2
58	59
59	2
60	4
61	2
62	3
63	2
64	4
65	2
66	45
67	2
68	3
69	2
70	15
71	2
72	4
73	2
74	3
75	2
76	4
77	2
78	9
79	2
80	3
81	2
82	83
83	2
84	4
85	2

n	a(n)
1	2
2	3
3	2
4	4
5	2
6	7
7	2
8	3
9	2
10	11
11	2
12	4
13	2
14	3
15	2
16	4
17	2
18	19
19	2
20	3
21	2
22	23
23	2
24	4
25	2
26	3
27	2
28	4
29	2
30	31
31	2
32	3
33	2
34	5
35	2
36	4
37	2
38	3
39	2
40	4
41	2
42	9
43	2
44	3
45	2
46	47
47	2
48	4
49	2
50	3
51	2
52	4
53	2
54	5
55	2
56	3
57	2
58	59
59	2
60	4
61	2
62	3
63	2
64	4
65	2
66	45
67	2
68	3
69	2
70	15
71	2
72	4
73	2
74	3
75	2
76	4
77	2
78	9
79	2
80	3
81	2
82	83
83	2
84	4
85	2

n	a(n)
1	2
2	3
3	2
4	4
5	2
6	7
7	2
8	3
9	2
10	11
11	2
12	4
13	2
14	3
15	2
16	4
17	2
18	19
19	2
20	3
21	2
22	23
23	2
24	4
25	2
26	3
27	2
28	4
29	2
30	31
31	2
32	3
33	2
34	5
35	2
36	4
37	2
38	3
39	2
40	4
41	2
42	9
43	2
44	3
45	2
46	47
47	2
48	4
49	2
50	3
51	2
52	4
53	2
54	5
55	2
56	3
57	2
58	59
59	2
60	4
61	2
62	3
63	2
64	4
65	2
66	45
67	2
68	3
69	2
70	15
71	2
72	4
73	2
74	3
75	2
76	4
77	2
78	9
79	2
80	3
81	2
82	83
83	2
84	4
85	2