A054601 - cp's OEIS frontend

A054601 a(n) = Sum_{d|n, d odd} d*2^(n/d - 1), a(0)=0.

n	a(n)
0	0
1	1
2	2
3	7
4	8
5	21
6	38
7	71
8	128
9	277
10	522
11	1035
12	2072
13	4109
14	8206
15	16467
16	32768
17	65553
18	131186
19	262163
20	524328
21	1048817
22	2097174
23	4194327
24	8388992
25	16777321
26	33554458
27	67109695
28	134217784
29	268435485
30	536872638
31	1073741855
32	2147483648

[0, 1, 2, 7, 8, 21, 38, 71, 128, 277, 522, 1035, 2072, 4109, 8206, 16467, 32768, 65553, 131186, 262163, 524328, 1048817, 2097174, 4194327, 8388992, 16777321, 33554458, 67109695, 134217784, 268435485, 536872638, 1073741855, 2147483648]

cp's OEIS Frontend

A054601 a(n) = Sum_{d|n, d odd} d*2^(n/d - 1), a(0)=0.

Table of values

List of values