A178344 - cp's OEIS frontend

A178344 a(n) = Sum_i prime(i+1)^b(i) where n = Sum_{i>=0} b(i)*2^e(i) is the binary representation of n.

n	a(n)
0	1
1	2
2	4
3	5
4	7
5	8
6	9
7	10
8	10
9	11
10	12
11	13
12	14
13	15
14	16
15	17
16	15
17	16
18	17
19	18
20	19
21	20
22	21
23	22
24	21
25	22
26	23
27	24
28	25
29	26
30	27
31	28
32	18
33	19
34	20
35	21
36	22
37	23
38	24
39	25
40	24
41	25
42	26
43	27
44	28
45	29
46	30
47	31
48	28
49	29
50	30
51	31
52	32
53	33
54	34
55	35
56	34
57	35
58	36
59	37
60	38
61	39
62	40
63	41
64	23
65	24
66	25
67	26
68	27
69	28
70	29
71	30
72	29
73	30

[1, 2, 4, 5, 7, 8, 9, 10, 10, 11, 12, 13, 14, 15, 16, 17, 15, 16, 17, 18, 19, 20, 21, 22, 21, 22, 23, 24, 25, 26, 27, 28, 18, 19, 20, 21, 22, 23, 24, 25, 24, 25, 26, 27, 28, 29, 30, 31, 28, 29, 30, 31, 32, 33, 34, 35, 34, 35, 36, 37, 38, 39, 40, 41, 23, 24, 25, 26, 27, 28, 29, 30, 29, 30]

cp's OEIS Frontend

A178344 a(n) = Sum_i prime(i+1)^b(i) where n = Sum_{i>=0} b(i)*2^e(i) is the binary representation of n.

Table of values

List of values

n	a(n)
0	1
1	2
2	4
3	5
4	7
5	8
6	9
7	10
8	10
9	11
10	12
11	13
12	14
13	15
14	16
15	17
16	15
17	16
18	17
19	18
20	19
21	20
22	21
23	22
24	21
25	22
26	23
27	24
28	25
29	26
30	27
31	28
32	18
33	19
34	20
35	21
36	22
37	23
38	24
39	25
40	24
41	25
42	26
43	27
44	28
45	29
46	30
47	31
48	28
49	29
50	30
51	31
52	32
53	33
54	34
55	35
56	34
57	35
58	36
59	37
60	38
61	39
62	40
63	41
64	23
65	24
66	25
67	26
68	27
69	28
70	29
71	30
72	29
73	30

n	a(n)
0	1
1	2
2	4
3	5
4	7
5	8
6	9
7	10
8	10
9	11
10	12
11	13
12	14
13	15
14	16
15	17
16	15
17	16
18	17
19	18
20	19
21	20
22	21
23	22
24	21
25	22
26	23
27	24
28	25
29	26
30	27
31	28
32	18
33	19
34	20
35	21
36	22
37	23
38	24
39	25
40	24
41	25
42	26
43	27
44	28
45	29
46	30
47	31
48	28
49	29
50	30
51	31
52	32
53	33
54	34
55	35
56	34
57	35
58	36
59	37
60	38
61	39
62	40
63	41
64	23
65	24
66	25
67	26
68	27
69	28
70	29
71	30
72	29
73	30

n	a(n)
0	1
1	2
2	4
3	5
4	7
5	8
6	9
7	10
8	10
9	11
10	12
11	13
12	14
13	15
14	16
15	17
16	15
17	16
18	17
19	18
20	19
21	20
22	21
23	22
24	21
25	22
26	23
27	24
28	25
29	26
30	27
31	28
32	18
33	19
34	20
35	21
36	22
37	23
38	24
39	25
40	24
41	25
42	26
43	27
44	28
45	29
46	30
47	31
48	28
49	29
50	30
51	31
52	32
53	33
54	34
55	35
56	34
57	35
58	36
59	37
60	38
61	39
62	40
63	41
64	23
65	24
66	25
67	26
68	27
69	28
70	29
71	30
72	29
73	30