A220072 - cp's OEIS frontend

A220072 Least prime p such that sum_{k=0}^n A005117(k+1)*x^{n-k} is irreducible modulo p.

n	a(n)
1	2
2	5
3	2
4	7
5	11
6	31
7	13
8	19
9	89
10	17
11	37
12	37
13	43
14	19
15	137
16	29
17	3
18	7
19	2
20	19
21	13
22	59
23	139
24	37
25	2
26	239
27	31
28	337
29	487
30	97
31	337
32	97
33	307
34	181
35	223
36	19
37	79
38	401
39	2
40	491
41	269
42	211
43	97
44	193
45	719
46	149
47	97
48	191
49	83
50	613

[2, 5, 2, 7, 11, 31, 13, 19, 89, 17, 37, 37, 43, 19, 137, 29, 3, 7, 2, 19, 13, 59, 139, 37, 2, 239, 31, 337, 487, 97, 337, 97, 307, 181, 223, 19, 79, 401, 2, 491, 269, 211, 97, 193, 719, 149, 97, 191, 83, 613]

cp's OEIS Frontend

A220072 Least prime p such that sum_{k=0}^n A005117(k+1)*x^{n-k} is irreducible modulo p.

Table of values

List of values

n	a(n)
1	2
2	5
3	2
4	7
5	11
6	31
7	13
8	19
9	89
10	17
11	37
12	37
13	43
14	19
15	137
16	29
17	3
18	7
19	2
20	19
21	13
22	59
23	139
24	37
25	2
26	239
27	31
28	337
29	487
30	97
31	337
32	97
33	307
34	181
35	223
36	19
37	79
38	401
39	2
40	491
41	269
42	211
43	97
44	193
45	719
46	149
47	97
48	191
49	83
50	613

n	a(n)
1	2
2	5
3	2
4	7
5	11
6	31
7	13
8	19
9	89
10	17
11	37
12	37
13	43
14	19
15	137
16	29
17	3
18	7
19	2
20	19
21	13
22	59
23	139
24	37
25	2
26	239
27	31
28	337
29	487
30	97
31	337
32	97
33	307
34	181
35	223
36	19
37	79
38	401
39	2
40	491
41	269
42	211
43	97
44	193
45	719
46	149
47	97
48	191
49	83
50	613

n	a(n)
1	2
2	5
3	2
4	7
5	11
6	31
7	13
8	19
9	89
10	17
11	37
12	37
13	43
14	19
15	137
16	29
17	3
18	7
19	2
20	19
21	13
22	59
23	139
24	37
25	2
26	239
27	31
28	337
29	487
30	97
31	337
32	97
33	307
34	181
35	223
36	19
37	79
38	401
39	2
40	491
41	269
42	211
43	97
44	193
45	719
46	149
47	97
48	191
49	83
50	613