A269485 - cp's OEIS frontend

A269485 Least k > 0 such that n! + k^2 is prime.

n	a(n)
0	1
1	1
2	1
3	1
4	7
5	11
6	7
7	13
8	17
9	31
10	13
11	1
12	47
13	17
14	19
15	19
16	23
17	73
18	43
19	29
20	47
21	31
22	43
23	29
24	31
25	37
26	167
27	1
28	29
29	43
30	79
31	229
32	89
33	71
34	137
35	37
36	53
37	1
38	79
39	131
40	137
41	1
42	71
43	83
44	89
45	89
46	53
47	97
48	53
49	101
50	59
51	173
52	79
53	71
54	353
55	191
56	103
57	523
58	229
59	191
60	103
61	401
62	67
63	257

[1, 1, 1, 1, 7, 11, 7, 13, 17, 31, 13, 1, 47, 17, 19, 19, 23, 73, 43, 29, 47, 31, 43, 29, 31, 37, 167, 1, 29, 43, 79, 229, 89, 71, 137, 37, 53, 1, 79, 131, 137, 1, 71, 83, 89, 89, 53, 97, 53, 101, 59, 173, 79, 71, 353, 191, 103, 523, 229, 191, 103, 401, 67, 257]

cp's OEIS Frontend

A269485 Least k > 0 such that n! + k^2 is prime.

Table of values

List of values

n	a(n)
0	1
1	1
2	1
3	1
4	7
5	11
6	7
7	13
8	17
9	31
10	13
11	1
12	47
13	17
14	19
15	19
16	23
17	73
18	43
19	29
20	47
21	31
22	43
23	29
24	31
25	37
26	167
27	1
28	29
29	43
30	79
31	229
32	89
33	71
34	137
35	37
36	53
37	1
38	79
39	131
40	137
41	1
42	71
43	83
44	89
45	89
46	53
47	97
48	53
49	101
50	59
51	173
52	79
53	71
54	353
55	191
56	103
57	523
58	229
59	191
60	103
61	401
62	67
63	257

n	a(n)
0	1
1	1
2	1
3	1
4	7
5	11
6	7
7	13
8	17
9	31
10	13
11	1
12	47
13	17
14	19
15	19
16	23
17	73
18	43
19	29
20	47
21	31
22	43
23	29
24	31
25	37
26	167
27	1
28	29
29	43
30	79
31	229
32	89
33	71
34	137
35	37
36	53
37	1
38	79
39	131
40	137
41	1
42	71
43	83
44	89
45	89
46	53
47	97
48	53
49	101
50	59
51	173
52	79
53	71
54	353
55	191
56	103
57	523
58	229
59	191
60	103
61	401
62	67
63	257

n	a(n)
0	1
1	1
2	1
3	1
4	7
5	11
6	7
7	13
8	17
9	31
10	13
11	1
12	47
13	17
14	19
15	19
16	23
17	73
18	43
19	29
20	47
21	31
22	43
23	29
24	31
25	37
26	167
27	1
28	29
29	43
30	79
31	229
32	89
33	71
34	137
35	37
36	53
37	1
38	79
39	131
40	137
41	1
42	71
43	83
44	89
45	89
46	53
47	97
48	53
49	101
50	59
51	173
52	79
53	71
54	353
55	191
56	103
57	523
58	229
59	191
60	103
61	401
62	67
63	257