A156642 - cp's OEIS frontend

A156642 Number of decompositions of 4n+2 into unordered sums of two primes of the form 4k+3.

n	a(n)
0	0
1	1
2	1
3	2
4	1
5	2
6	2
7	2
8	2
9	2
10	2
11	2
12	3
13	3
14	1
15	3
16	3
17	3
18	3
19	4
20	3
21	4
22	6
23	3
24	2
25	4
26	3
27	4
28	5
29	3
30	2
31	5
32	4
33	4
34	5
35	4
36	4
37	7
38	4
39	4
40	5
41	3
42	6
43	7
44	3
45	5
46	7
47	4
48	4
49	7
50	4
51	5
52	10
53	5
54	4
55	7
56	3
57	7
58	9
59	5
60	6
61	8
62	5
63	5
64	9
65	5
66	5
67	11
68	6
69	5
70	9
71	5
72	6
73	10
74	5
75	6
76	8
77	6
78	6
79	9
80	5
81	5
82	12
83	6
84	5
85	9

[0, 1, 1, 2, 1, 2, 2, 2, 2, 2, 2, 2, 3, 3, 1, 3, 3, 3, 3, 4, 3, 4, 6, 3, 2, 4, 3, 4, 5, 3, 2, 5, 4, 4, 5, 4, 4, 7, 4, 4, 5, 3, 6, 7, 3, 5, 7, 4, 4, 7, 4, 5, 10, 5, 4, 7, 3, 7, 9, 5, 6, 8, 5, 5, 9, 5, 5, 11, 6, 5, 9, 5, 6, 10, 5, 6, 8, 6, 6, 9, 5, 5, 12, 6, 5, 9]

cp's OEIS Frontend

A156642 Number of decompositions of 4n+2 into unordered sums of two primes of the form 4k+3.

Table of values

List of values

n	a(n)
0	0
1	1
2	1
3	2
4	1
5	2
6	2
7	2
8	2
9	2
10	2
11	2
12	3
13	3
14	1
15	3
16	3
17	3
18	3
19	4
20	3
21	4
22	6
23	3
24	2
25	4
26	3
27	4
28	5
29	3
30	2
31	5
32	4
33	4
34	5
35	4
36	4
37	7
38	4
39	4
40	5
41	3
42	6
43	7
44	3
45	5
46	7
47	4
48	4
49	7
50	4
51	5
52	10
53	5
54	4
55	7
56	3
57	7
58	9
59	5
60	6
61	8
62	5
63	5
64	9
65	5
66	5
67	11
68	6
69	5
70	9
71	5
72	6
73	10
74	5
75	6
76	8
77	6
78	6
79	9
80	5
81	5
82	12
83	6
84	5
85	9

n	a(n)
0	0
1	1
2	1
3	2
4	1
5	2
6	2
7	2
8	2
9	2
10	2
11	2
12	3
13	3
14	1
15	3
16	3
17	3
18	3
19	4
20	3
21	4
22	6
23	3
24	2
25	4
26	3
27	4
28	5
29	3
30	2
31	5
32	4
33	4
34	5
35	4
36	4
37	7
38	4
39	4
40	5
41	3
42	6
43	7
44	3
45	5
46	7
47	4
48	4
49	7
50	4
51	5
52	10
53	5
54	4
55	7
56	3
57	7
58	9
59	5
60	6
61	8
62	5
63	5
64	9
65	5
66	5
67	11
68	6
69	5
70	9
71	5
72	6
73	10
74	5
75	6
76	8
77	6
78	6
79	9
80	5
81	5
82	12
83	6
84	5
85	9

n	a(n)
0	0
1	1
2	1
3	2
4	1
5	2
6	2
7	2
8	2
9	2
10	2
11	2
12	3
13	3
14	1
15	3
16	3
17	3
18	3
19	4
20	3
21	4
22	6
23	3
24	2
25	4
26	3
27	4
28	5
29	3
30	2
31	5
32	4
33	4
34	5
35	4
36	4
37	7
38	4
39	4
40	5
41	3
42	6
43	7
44	3
45	5
46	7
47	4
48	4
49	7
50	4
51	5
52	10
53	5
54	4
55	7
56	3
57	7
58	9
59	5
60	6
61	8
62	5
63	5
64	9
65	5
66	5
67	11
68	6
69	5
70	9
71	5
72	6
73	10
74	5
75	6
76	8
77	6
78	6
79	9
80	5
81	5
82	12
83	6
84	5
85	9