A288159 - cp's OEIS frontend

A288159 a(n) = smallest k such that kn2^n+1 is prime.

n	a(n)
1	1
2	2
3	3
4	3
5	4
6	2
7	3
8	6
9	4
10	4
11	9
12	3
13	3
14	5
15	9
16	7
17	3
18	3
19	3
20	5
21	3
22	7
23	19
24	5
25	5
26	2
27	3
28	7
29	7
30	9
31	5
32	15
33	3
34	10
35	10
36	7
37	14
38	6
39	8
40	6
41	25
42	6
43	50
44	45
45	13
46	4
47	18
48	31
49	27
50	2
51	4
52	33
53	18
54	2
55	41
56	18
57	10
58	9
59	6
60	7
61	3
62	32
63	4
64	39
65	18
66	17
67	11
68	30
69	17
70	18
71	7
72	51
73	38
74	11
75	15
76	13
77	9
78	10
79	24
80	2

[1, 2, 3, 3, 4, 2, 3, 6, 4, 4, 9, 3, 3, 5, 9, 7, 3, 3, 3, 5, 3, 7, 19, 5, 5, 2, 3, 7, 7, 9, 5, 15, 3, 10, 10, 7, 14, 6, 8, 6, 25, 6, 50, 45, 13, 4, 18, 31, 27, 2, 4, 33, 18, 2, 41, 18, 10, 9, 6, 7, 3, 32, 4, 39, 18, 17, 11, 30, 17, 18, 7, 51, 38, 11, 15, 13, 9, 10, 24, 2]

cp's OEIS Frontend

A288159 a(n) = smallest k such that kn2^n+1 is prime.

Table of values

List of values

n	a(n)
1	1
2	2
3	3
4	3
5	4
6	2
7	3
8	6
9	4
10	4
11	9
12	3
13	3
14	5
15	9
16	7
17	3
18	3
19	3
20	5
21	3
22	7
23	19
24	5
25	5
26	2
27	3
28	7
29	7
30	9
31	5
32	15
33	3
34	10
35	10
36	7
37	14
38	6
39	8
40	6
41	25
42	6
43	50
44	45
45	13
46	4
47	18
48	31
49	27
50	2
51	4
52	33
53	18
54	2
55	41
56	18
57	10
58	9
59	6
60	7
61	3
62	32
63	4
64	39
65	18
66	17
67	11
68	30
69	17
70	18
71	7
72	51
73	38
74	11
75	15
76	13
77	9
78	10
79	24
80	2

n	a(n)
1	1
2	2
3	3
4	3
5	4
6	2
7	3
8	6
9	4
10	4
11	9
12	3
13	3
14	5
15	9
16	7
17	3
18	3
19	3
20	5
21	3
22	7
23	19
24	5
25	5
26	2
27	3
28	7
29	7
30	9
31	5
32	15
33	3
34	10
35	10
36	7
37	14
38	6
39	8
40	6
41	25
42	6
43	50
44	45
45	13
46	4
47	18
48	31
49	27
50	2
51	4
52	33
53	18
54	2
55	41
56	18
57	10
58	9
59	6
60	7
61	3
62	32
63	4
64	39
65	18
66	17
67	11
68	30
69	17
70	18
71	7
72	51
73	38
74	11
75	15
76	13
77	9
78	10
79	24
80	2

cp's OEIS Frontend

A288159 a(n) = smallest k such that k*n*2^n+1 is prime.

Table of values

List of values

A288159 a(n) = smallest k such that kn2^n+1 is prime.

n	a(n)
1	1
2	2
3	3
4	3
5	4
6	2
7	3
8	6
9	4
10	4
11	9
12	3
13	3
14	5
15	9
16	7
17	3
18	3
19	3
20	5
21	3
22	7
23	19
24	5
25	5
26	2
27	3
28	7
29	7
30	9
31	5
32	15
33	3
34	10
35	10
36	7
37	14
38	6
39	8
40	6
41	25
42	6
43	50
44	45
45	13
46	4
47	18
48	31
49	27
50	2
51	4
52	33
53	18
54	2
55	41
56	18
57	10
58	9
59	6
60	7
61	3
62	32
63	4
64	39
65	18
66	17
67	11
68	30
69	17
70	18
71	7
72	51
73	38
74	11
75	15
76	13
77	9
78	10
79	24
80	2