A087738 - cp's OEIS frontend

A087738 Square array: T(n,k) gives n-th number a such that a^(2^k)+1 is prime (a generalized Fermat).

n	a(n)
0	1
1	2
2	1
3	4
4	2
5	1
6	6
7	4
8	2
9	1
10	10
11	6
12	4
13	2
14	1
15	12
16	10
17	6
18	4
19	2
20	1
21	16
22	14
23	16
24	118
25	44
26	30
27	1
28	18
29	16
30	20
31	132
32	74
33	54
34	102
35	1
36	22
37	20
38	24
39	140
40	76
41	96
42	162
43	120
44	1
45	28
46	24
47	28
48	152
49	94
50	112
51	274
52	190
53	278
54	1
55	30
56	26
57	34
58	208
59	156
60	114
61	300
62	234
63	614
64	46
65	1
66	36
67	36
68	46
69	240
70	158

[1, 2, 1, 4, 2, 1, 6, 4, 2, 1, 10, 6, 4, 2, 1, 12, 10, 6, 4, 2, 1, 16, 14, 16, 118, 44, 30, 1, 18, 16, 20, 132, 74, 54, 102, 1, 22, 20, 24, 140, 76, 96, 162, 120, 1, 28, 24, 28, 152, 94, 112, 274, 190, 278, 1, 30, 26, 34, 208, 156, 114, 300, 234, 614, 46, 1, 36, 36, 46, 240, 158]

cp's OEIS Frontend

A087738 Square array: T(n,k) gives n-th number a such that a^(2^k)+1 is prime (a generalized Fermat).

Table of values

List of values

n	a(n)
0	1
1	2
2	1
3	4
4	2
5	1
6	6
7	4
8	2
9	1
10	10
11	6
12	4
13	2
14	1
15	12
16	10
17	6
18	4
19	2
20	1
21	16
22	14
23	16
24	118
25	44
26	30
27	1
28	18
29	16
30	20
31	132
32	74
33	54
34	102
35	1
36	22
37	20
38	24
39	140
40	76
41	96
42	162
43	120
44	1
45	28
46	24
47	28
48	152
49	94
50	112
51	274
52	190
53	278
54	1
55	30
56	26
57	34
58	208
59	156
60	114
61	300
62	234
63	614
64	46
65	1
66	36
67	36
68	46
69	240
70	158

n	a(n)
0	1
1	2
2	1
3	4
4	2
5	1
6	6
7	4
8	2
9	1
10	10
11	6
12	4
13	2
14	1
15	12
16	10
17	6
18	4
19	2
20	1
21	16
22	14
23	16
24	118
25	44
26	30
27	1
28	18
29	16
30	20
31	132
32	74
33	54
34	102
35	1
36	22
37	20
38	24
39	140
40	76
41	96
42	162
43	120
44	1
45	28
46	24
47	28
48	152
49	94
50	112
51	274
52	190
53	278
54	1
55	30
56	26
57	34
58	208
59	156
60	114
61	300
62	234
63	614
64	46
65	1
66	36
67	36
68	46
69	240
70	158

n	a(n)
0	1
1	2
2	1
3	4
4	2
5	1
6	6
7	4
8	2
9	1
10	10
11	6
12	4
13	2
14	1
15	12
16	10
17	6
18	4
19	2
20	1
21	16
22	14
23	16
24	118
25	44
26	30
27	1
28	18
29	16
30	20
31	132
32	74
33	54
34	102
35	1
36	22
37	20
38	24
39	140
40	76
41	96
42	162
43	120
44	1
45	28
46	24
47	28
48	152
49	94
50	112
51	274
52	190
53	278
54	1
55	30
56	26
57	34
58	208
59	156
60	114
61	300
62	234
63	614
64	46
65	1
66	36
67	36
68	46
69	240
70	158