A263107 - cp's OEIS frontend

A263107 Number of ordered pairs (k, m) with k > 0 and m > 0 such that n = pi(k^2/2) + pi(3*m^2/2), where pi(x) denotes the number of primes not exceeding x.

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

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

cp's OEIS Frontend

A263107 Number of ordered pairs (k, m) with k > 0 and m > 0 such that n = pi(k^2/2) + pi(3*m^2/2), where pi(x) denotes the number of primes not exceeding x.

Table of values

List of values

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

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

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