A332731 - cp's OEIS frontend

A332731 a(n) is the smallest positive k such that n!*prime(n) - k is a prime.

n	a(n)
2	1
3	1
4	1
5	1
6	11
7	11
8	1
9	13
10	1
11	17
12	1
13	1
14	53
15	17
16	1
17	29
18	23
19	31
20	23
21	1
22	29
23	67
24	31
25	31
26	43
27	29
28	181
29	1
30	83
31	41
32	101
33	79
34	179
35	79
36	43
37	83
38	47
39	83
40	163
41	79
42	53
43	73
44	59
45	67
46	347
47	223
48	67
49	53
50	97
51	1
52	157
53	73
54	1
55	229
56	101
57	1
58	263
59	103
60	101
61	163
62	139
63	599
64	103
65	197
66	73
67	433
68	313
69	73

[1, 1, 1, 1, 11, 11, 1, 13, 1, 17, 1, 1, 53, 17, 1, 29, 23, 31, 23, 1, 29, 67, 31, 31, 43, 29, 181, 1, 83, 41, 101, 79, 179, 79, 43, 83, 47, 83, 163, 79, 53, 73, 59, 67, 347, 223, 67, 53, 97, 1, 157, 73, 1, 229, 101, 1, 263, 103, 101, 163, 139, 599, 103, 197, 73, 433, 313, 73]

cp's OEIS Frontend

A332731 a(n) is the smallest positive k such that n!*prime(n) - k is a prime.

Table of values

List of values

n	a(n)
2	1
3	1
4	1
5	1
6	11
7	11
8	1
9	13
10	1
11	17
12	1
13	1
14	53
15	17
16	1
17	29
18	23
19	31
20	23
21	1
22	29
23	67
24	31
25	31
26	43
27	29
28	181
29	1
30	83
31	41
32	101
33	79
34	179
35	79
36	43
37	83
38	47
39	83
40	163
41	79
42	53
43	73
44	59
45	67
46	347
47	223
48	67
49	53
50	97
51	1
52	157
53	73
54	1
55	229
56	101
57	1
58	263
59	103
60	101
61	163
62	139
63	599
64	103
65	197
66	73
67	433
68	313
69	73

n	a(n)
2	1
3	1
4	1
5	1
6	11
7	11
8	1
9	13
10	1
11	17
12	1
13	1
14	53
15	17
16	1
17	29
18	23
19	31
20	23
21	1
22	29
23	67
24	31
25	31
26	43
27	29
28	181
29	1
30	83
31	41
32	101
33	79
34	179
35	79
36	43
37	83
38	47
39	83
40	163
41	79
42	53
43	73
44	59
45	67
46	347
47	223
48	67
49	53
50	97
51	1
52	157
53	73
54	1
55	229
56	101
57	1
58	263
59	103
60	101
61	163
62	139
63	599
64	103
65	197
66	73
67	433
68	313
69	73

n	a(n)
2	1
3	1
4	1
5	1
6	11
7	11
8	1
9	13
10	1
11	17
12	1
13	1
14	53
15	17
16	1
17	29
18	23
19	31
20	23
21	1
22	29
23	67
24	31
25	31
26	43
27	29
28	181
29	1
30	83
31	41
32	101
33	79
34	179
35	79
36	43
37	83
38	47
39	83
40	163
41	79
42	53
43	73
44	59
45	67
46	347
47	223
48	67
49	53
50	97
51	1
52	157
53	73
54	1
55	229
56	101
57	1
58	263
59	103
60	101
61	163
62	139
63	599
64	103
65	197
66	73
67	433
68	313
69	73