A230443 - cp's OEIS frontend

A230443 Number of decompositions of 2n into a sum of two primes p2 >= p1 such that the number of runs in binary expansion of p2-p1 is less than or equal to 4.

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

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

cp's OEIS Frontend

A230443 Number of decompositions of 2n into a sum of two primes p2 >= p1 such that the number of runs in binary expansion of p2-p1 is less than or equal to 4.

Table of values

List of values

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

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

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