A242872 - cp's OEIS frontend

A242872 Least number k > 1 such that (k^k-n^n)/(k-n) is an integer.

n	a(n)
1	2
2	3
3	2
4	2
5	3
6	2
7	3
8	2
9	3
10	4
11	3
12	3
13	4
14	2
15	3
16	4
17	5
18	6
19	3
20	2
21	3
22	2
23	3
24	4
25	4
26	6
27	3
28	4
29	5
30	3
31	4
32	8
33	6
34	4
35	3
36	4
37	5
38	2
39	3
40	4
41	5
42	3
43	3
44	2
45	3
46	4
47	5
48	6
49	7
50	8
51	3
52	4
53	5
54	4
55	5
56	2
57	3
58	4
59	5
60	5
61	7
62	2
63	3
64	4
65	5
66	6
67	3
68	4
69	5
70	6
71	7
72	4
73	9
74	10
75	3
76	4
77	5
78	6
79	7
80	8
81	3
82	4
83	3
84	4
85	4
86	2
87	3
88	4
89	5
90	6
91	7
92	8
93	9
94	4

[2, 3, 2, 2, 3, 2, 3, 2, 3, 4, 3, 3, 4, 2, 3, 4, 5, 6, 3, 2, 3, 2, 3, 4, 4, 6, 3, 4, 5, 3, 4, 8, 6, 4, 3, 4, 5, 2, 3, 4, 5, 3, 3, 2, 3, 4, 5, 6, 7, 8, 3, 4, 5, 4, 5, 2, 3, 4, 5, 5, 7, 2, 3, 4, 5, 6, 3, 4, 5, 6, 7, 4, 9, 10, 3, 4, 5, 6, 7, 8, 3, 4, 3, 4, 4, 2, 3, 4, 5, 6, 7, 8, 9, 4]

cp's OEIS Frontend

A242872 Least number k > 1 such that (k^k-n^n)/(k-n) is an integer.

Table of values

List of values

n	a(n)
1	2
2	3
3	2
4	2
5	3
6	2
7	3
8	2
9	3
10	4
11	3
12	3
13	4
14	2
15	3
16	4
17	5
18	6
19	3
20	2
21	3
22	2
23	3
24	4
25	4
26	6
27	3
28	4
29	5
30	3
31	4
32	8
33	6
34	4
35	3
36	4
37	5
38	2
39	3
40	4
41	5
42	3
43	3
44	2
45	3
46	4
47	5
48	6
49	7
50	8
51	3
52	4
53	5
54	4
55	5
56	2
57	3
58	4
59	5
60	5
61	7
62	2
63	3
64	4
65	5
66	6
67	3
68	4
69	5
70	6
71	7
72	4
73	9
74	10
75	3
76	4
77	5
78	6
79	7
80	8
81	3
82	4
83	3
84	4
85	4
86	2
87	3
88	4
89	5
90	6
91	7
92	8
93	9
94	4

n	a(n)
1	2
2	3
3	2
4	2
5	3
6	2
7	3
8	2
9	3
10	4
11	3
12	3
13	4
14	2
15	3
16	4
17	5
18	6
19	3
20	2
21	3
22	2
23	3
24	4
25	4
26	6
27	3
28	4
29	5
30	3
31	4
32	8
33	6
34	4
35	3
36	4
37	5
38	2
39	3
40	4
41	5
42	3
43	3
44	2
45	3
46	4
47	5
48	6
49	7
50	8
51	3
52	4
53	5
54	4
55	5
56	2
57	3
58	4
59	5
60	5
61	7
62	2
63	3
64	4
65	5
66	6
67	3
68	4
69	5
70	6
71	7
72	4
73	9
74	10
75	3
76	4
77	5
78	6
79	7
80	8
81	3
82	4
83	3
84	4
85	4
86	2
87	3
88	4
89	5
90	6
91	7
92	8
93	9
94	4

n	a(n)
1	2
2	3
3	2
4	2
5	3
6	2
7	3
8	2
9	3
10	4
11	3
12	3
13	4
14	2
15	3
16	4
17	5
18	6
19	3
20	2
21	3
22	2
23	3
24	4
25	4
26	6
27	3
28	4
29	5
30	3
31	4
32	8
33	6
34	4
35	3
36	4
37	5
38	2
39	3
40	4
41	5
42	3
43	3
44	2
45	3
46	4
47	5
48	6
49	7
50	8
51	3
52	4
53	5
54	4
55	5
56	2
57	3
58	4
59	5
60	5
61	7
62	2
63	3
64	4
65	5
66	6
67	3
68	4
69	5
70	6
71	7
72	4
73	9
74	10
75	3
76	4
77	5
78	6
79	7
80	8
81	3
82	4
83	3
84	4
85	4
86	2
87	3
88	4
89	5
90	6
91	7
92	8
93	9
94	4