A256787 - cp's OEIS frontend

A256787 Smallest odd number k such that k2^(2n+1)+1 is a prime number.

n	a(n)
0	1
1	5
2	3
3	5
4	15
5	9
6	5
7	5
8	9
9	11
10	11
11	45
12	5
13	15
14	23
15	35
16	9
17	59
18	15
19	5
20	3
21	9
22	35
23	27
24	23
25	17
26	51
27	5
28	29
29	27
30	53
31	9
32	9
33	9
34	23
35	39
36	23
37	5
38	29
39	249
40	9
41	51
42	5
43	75
44	51
45	117
46	29
47	77
48	131
49	219
50	221
51	29
52	53
53	105
54	321
55	95
56	179
57	197
58	101
59	51
60	81
61	101
62	11
63	5
64	21
65	221
66	53

[1, 5, 3, 5, 15, 9, 5, 5, 9, 11, 11, 45, 5, 15, 23, 35, 9, 59, 15, 5, 3, 9, 35, 27, 23, 17, 51, 5, 29, 27, 53, 9, 9, 9, 23, 39, 23, 5, 29, 249, 9, 51, 5, 75, 51, 117, 29, 77, 131, 219, 221, 29, 53, 105, 321, 95, 179, 197, 101, 51, 81, 101, 11, 5, 21, 221, 53]

cp's OEIS Frontend

A256787 Smallest odd number k such that k2^(2n+1)+1 is a prime number.

Table of values

List of values

n	a(n)
0	1
1	5
2	3
3	5
4	15
5	9
6	5
7	5
8	9
9	11
10	11
11	45
12	5
13	15
14	23
15	35
16	9
17	59
18	15
19	5
20	3
21	9
22	35
23	27
24	23
25	17
26	51
27	5
28	29
29	27
30	53
31	9
32	9
33	9
34	23
35	39
36	23
37	5
38	29
39	249
40	9
41	51
42	5
43	75
44	51
45	117
46	29
47	77
48	131
49	219
50	221
51	29
52	53
53	105
54	321
55	95
56	179
57	197
58	101
59	51
60	81
61	101
62	11
63	5
64	21
65	221
66	53

n	a(n)
0	1
1	5
2	3
3	5
4	15
5	9
6	5
7	5
8	9
9	11
10	11
11	45
12	5
13	15
14	23
15	35
16	9
17	59
18	15
19	5
20	3
21	9
22	35
23	27
24	23
25	17
26	51
27	5
28	29
29	27
30	53
31	9
32	9
33	9
34	23
35	39
36	23
37	5
38	29
39	249
40	9
41	51
42	5
43	75
44	51
45	117
46	29
47	77
48	131
49	219
50	221
51	29
52	53
53	105
54	321
55	95
56	179
57	197
58	101
59	51
60	81
61	101
62	11
63	5
64	21
65	221
66	53

cp's OEIS Frontend

A256787 Smallest odd number k such that k*2^(2*n+1)+1 is a prime number.

Table of values

List of values

A256787 Smallest odd number k such that k2^(2n+1)+1 is a prime number.

n	a(n)
0	1
1	5
2	3
3	5
4	15
5	9
6	5
7	5
8	9
9	11
10	11
11	45
12	5
13	15
14	23
15	35
16	9
17	59
18	15
19	5
20	3
21	9
22	35
23	27
24	23
25	17
26	51
27	5
28	29
29	27
30	53
31	9
32	9
33	9
34	23
35	39
36	23
37	5
38	29
39	249
40	9
41	51
42	5
43	75
44	51
45	117
46	29
47	77
48	131
49	219
50	221
51	29
52	53
53	105
54	321
55	95
56	179
57	197
58	101
59	51
60	81
61	101
62	11
63	5
64	21
65	221
66	53