A230516 - cp's OEIS frontend

A230516 Number of ways to write n = a + b + c with 0 < a <= b <= c such that {a^2+a-1, a^2+a+1}, {b^2+b-1, b^2+b+1}, {c^2+c-1, c^2+c+1} are twin prime pairs.

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

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

cp's OEIS Frontend

A230516 Number of ways to write n = a + b + c with 0 < a <= b <= c such that {a^2+a-1, a^2+a+1}, {b^2+b-1, b^2+b+1}, {c^2+c-1, c^2+c+1} are twin prime pairs.

Table of values

List of values

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

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

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