A240509 - cp's OEIS frontend

A240509 Least number k > 0 such that n^k - (n-1)^k - ... - 3^k - 2^k is prime, or 0 if no such k exists.

n	a(n)
2	1
3	2
4	2
5	0
6	0
7	4
8	5
9	0
10	0
11	10
12	27
13	0
14	0
15	13
16	18
17	0
18	0
19	26
20	57
21	0
22	0
23	16
24	35
25	0
26	0
27	219
28	19
29	0
30	0
31	373
32	48
33	0
34	0
35	35
36	33
37	0
38	0
39	94
40	93
41	0
42	0
43	225
44	47
45	0
46	0
47	47
48	223
49	0
50	0
51	3227
52	49
53	0
54	0
55	199
56	127
57	0
58	0
59	45
60	67
61	0
62	0
63	65
64	123
65	0
66	0
67	103

[1, 2, 2, 0, 0, 4, 5, 0, 0, 10, 27, 0, 0, 13, 18, 0, 0, 26, 57, 0, 0, 16, 35, 0, 0, 219, 19, 0, 0, 373, 48, 0, 0, 35, 33, 0, 0, 94, 93, 0, 0, 225, 47, 0, 0, 47, 223, 0, 0, 3227, 49, 0, 0, 199, 127, 0, 0, 45, 67, 0, 0, 65, 123, 0, 0, 103]

cp's OEIS Frontend

A240509 Least number k > 0 such that n^k - (n-1)^k - ... - 3^k - 2^k is prime, or 0 if no such k exists.

Table of values

List of values