A108422 - cp's OEIS frontend

A108422 Greatest number of ones that can be used to write in binary representation 2*n as sum of two primes.

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

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

cp's OEIS Frontend

A108422 Greatest number of ones that can be used to write in binary representation 2*n as sum of two primes.

Table of values

List of values

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

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

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