A331469 - cp's OEIS frontend

A331469 a(n) is the greatest value of the form p_1 + ... + p_k where p_1, ..., p_k are powers of primes and such that the concatenation of the binary representations of p_1, ..., p_k equals the binary representation of n.

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

[1, 2, 3, 4, 5, 3, 7, 8, 9, 4, 11, 5, 13, 5, 8, 16, 17, 6, 19, 6, 7, 7, 23, 9, 25, 5, 27, 7, 29, 9, 31, 32, 17, 10, 18, 8, 37, 11, 20, 10, 41, 6, 43, 9, 15, 13, 47, 17, 49, 7, 26, 7, 53, 15, 28, 11, 26, 7, 59, 11, 61, 10, 32, 64, 33, 18, 67, 12, 13, 19, 71, 12]

cp's OEIS Frontend

A331469 a(n) is the greatest value of the form p_1 + ... + p_k where p_1, ..., p_k are powers of primes and such that the concatenation of the binary representations of p_1, ..., p_k equals the binary representation of n.

Table of values

List of values

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

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

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