A230224 - cp's OEIS frontend

A230224 Number of ways to write 2*n = p + q + r + s with p <= q <= r <= s such that p, q, r, s are primes in A230223.

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	0
7	0
8	0
9	0
10	0
11	0
12	0
13	0
14	1
15	0
16	1
17	0
18	1
19	1
20	2
21	1
22	2
23	1
24	2
25	2
26	4
27	1
28	3
29	3
30	3
31	4
32	4
33	3
34	5
35	4
36	5
37	3
38	6
39	4
40	6
41	5
42	5
43	5
44	7
45	5
46	9
47	4
48	6
49	6
50	8
51	6
52	9
53	5
54	7
55	7
56	10
57	6
58	8
59	7
60	8
61	7
62	9
63	5
64	10
65	7
66	11
67	7
68	7
69	7
70	11
71	7
72	10
73	6
74	10
75	6
76	13
77	7
78	9
79	7
80	11
81	9
82	11
83	7
84	9
85	6
86	14
87	8
88	12
89	6
90	13
91	11
92	12
93	11
94	13
95	10
96	16
97	9
98	14
99	7
100	14

[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 1, 1, 2, 1, 2, 1, 2, 2, 4, 1, 3, 3, 3, 4, 4, 3, 5, 4, 5, 3, 6, 4, 6, 5, 5, 5, 7, 5, 9, 4, 6, 6, 8, 6, 9, 5, 7, 7, 10, 6, 8, 7, 8, 7, 9, 5, 10, 7, 11, 7, 7, 7, 11, 7, 10, 6, 10, 6, 13, 7, 9, 7, 11, 9, 11, 7, 9, 6, 14, 8, 12, 6, 13, 11, 12, 11, 13, 10, 16, 9, 14, 7, 14]

cp's OEIS Frontend

A230224 Number of ways to write 2*n = p + q + r + s with p <= q <= r <= s such that p, q, r, s are primes in A230223.

Table of values

List of values

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	0
7	0
8	0
9	0
10	0
11	0
12	0
13	0
14	1
15	0
16	1
17	0
18	1
19	1
20	2
21	1
22	2
23	1
24	2
25	2
26	4
27	1
28	3
29	3
30	3
31	4
32	4
33	3
34	5
35	4
36	5
37	3
38	6
39	4
40	6
41	5
42	5
43	5
44	7
45	5
46	9
47	4
48	6
49	6
50	8
51	6
52	9
53	5
54	7
55	7
56	10
57	6
58	8
59	7
60	8
61	7
62	9
63	5
64	10
65	7
66	11
67	7
68	7
69	7
70	11
71	7
72	10
73	6
74	10
75	6
76	13
77	7
78	9
79	7
80	11
81	9
82	11
83	7
84	9
85	6
86	14
87	8
88	12
89	6
90	13
91	11
92	12
93	11
94	13
95	10
96	16
97	9
98	14
99	7
100	14

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	0
7	0
8	0
9	0
10	0
11	0
12	0
13	0
14	1
15	0
16	1
17	0
18	1
19	1
20	2
21	1
22	2
23	1
24	2
25	2
26	4
27	1
28	3
29	3
30	3
31	4
32	4
33	3
34	5
35	4
36	5
37	3
38	6
39	4
40	6
41	5
42	5
43	5
44	7
45	5
46	9
47	4
48	6
49	6
50	8
51	6
52	9
53	5
54	7
55	7
56	10
57	6
58	8
59	7
60	8
61	7
62	9
63	5
64	10
65	7
66	11
67	7
68	7
69	7
70	11
71	7
72	10
73	6
74	10
75	6
76	13
77	7
78	9
79	7
80	11
81	9
82	11
83	7
84	9
85	6
86	14
87	8
88	12
89	6
90	13
91	11
92	12
93	11
94	13
95	10
96	16
97	9
98	14
99	7
100	14

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	0
7	0
8	0
9	0
10	0
11	0
12	0
13	0
14	1
15	0
16	1
17	0
18	1
19	1
20	2
21	1
22	2
23	1
24	2
25	2
26	4
27	1
28	3
29	3
30	3
31	4
32	4
33	3
34	5
35	4
36	5
37	3
38	6
39	4
40	6
41	5
42	5
43	5
44	7
45	5
46	9
47	4
48	6
49	6
50	8
51	6
52	9
53	5
54	7
55	7
56	10
57	6
58	8
59	7
60	8
61	7
62	9
63	5
64	10
65	7
66	11
67	7
68	7
69	7
70	11
71	7
72	10
73	6
74	10
75	6
76	13
77	7
78	9
79	7
80	11
81	9
82	11
83	7
84	9
85	6
86	14
87	8
88	12
89	6
90	13
91	11
92	12
93	11
94	13
95	10
96	16
97	9
98	14
99	7
100	14