A246452 - cp's OEIS frontend

A246452 Let A be the set of all numbers m for which m^2+1 is prime (see A005574). The sequence lists the pairs of numbers (a, b) such that every m > 1 included in A can be written in the form m = a + b for a <= b both in A and a minimum.

n	a(n)
1	1
2	1
3	2
4	2
5	2
6	4
7	4
8	6
9	4
10	10
11	2
12	14
13	4
14	16
15	4
16	20
17	2
18	24
19	10
20	26
21	4
22	36
23	14
24	40
25	2
26	54
27	10
28	56
29	20
30	54
31	10
32	74
33	6
34	84
35	4
36	90
37	16
38	94
39	6
40	110
41	4
42	116
43	4
44	120
45	2
46	124
47	4
48	126
49	4
50	130
51	16
52	130
53	4
54	146
55	6
56	150
57	4
58	156
59	10
60	160
61	6
62	170
63	4
64	176
65	4
66	180
67	20
68	184

[1, 1, 2, 2, 2, 4, 4, 6, 4, 10, 2, 14, 4, 16, 4, 20, 2, 24, 10, 26, 4, 36, 14, 40, 2, 54, 10, 56, 20, 54, 10, 74, 6, 84, 4, 90, 16, 94, 6, 110, 4, 116, 4, 120, 2, 124, 4, 126, 4, 130, 16, 130, 4, 146, 6, 150, 4, 156, 10, 160, 6, 170, 4, 176, 4, 180, 20, 184]

cp's OEIS Frontend

A246452 Let A be the set of all numbers m for which m^2+1 is prime (see A005574). The sequence lists the pairs of numbers (a, b) such that every m > 1 included in A can be written in the form m = a + b for a <= b both in A and a minimum.

Table of values

List of values

n	a(n)
1	1
2	1
3	2
4	2
5	2
6	4
7	4
8	6
9	4
10	10
11	2
12	14
13	4
14	16
15	4
16	20
17	2
18	24
19	10
20	26
21	4
22	36
23	14
24	40
25	2
26	54
27	10
28	56
29	20
30	54
31	10
32	74
33	6
34	84
35	4
36	90
37	16
38	94
39	6
40	110
41	4
42	116
43	4
44	120
45	2
46	124
47	4
48	126
49	4
50	130
51	16
52	130
53	4
54	146
55	6
56	150
57	4
58	156
59	10
60	160
61	6
62	170
63	4
64	176
65	4
66	180
67	20
68	184

n	a(n)
1	1
2	1
3	2
4	2
5	2
6	4
7	4
8	6
9	4
10	10
11	2
12	14
13	4
14	16
15	4
16	20
17	2
18	24
19	10
20	26
21	4
22	36
23	14
24	40
25	2
26	54
27	10
28	56
29	20
30	54
31	10
32	74
33	6
34	84
35	4
36	90
37	16
38	94
39	6
40	110
41	4
42	116
43	4
44	120
45	2
46	124
47	4
48	126
49	4
50	130
51	16
52	130
53	4
54	146
55	6
56	150
57	4
58	156
59	10
60	160
61	6
62	170
63	4
64	176
65	4
66	180
67	20
68	184

n	a(n)
1	1
2	1
3	2
4	2
5	2
6	4
7	4
8	6
9	4
10	10
11	2
12	14
13	4
14	16
15	4
16	20
17	2
18	24
19	10
20	26
21	4
22	36
23	14
24	40
25	2
26	54
27	10
28	56
29	20
30	54
31	10
32	74
33	6
34	84
35	4
36	90
37	16
38	94
39	6
40	110
41	4
42	116
43	4
44	120
45	2
46	124
47	4
48	126
49	4
50	130
51	16
52	130
53	4
54	146
55	6
56	150
57	4
58	156
59	10
60	160
61	6
62	170
63	4
64	176
65	4
66	180
67	20
68	184