A198383 - cp's OEIS frontend

A198383 a(n) = Sum_{k=1..n} 2^(n mod k).

n	a(n)
1	1
2	2
3	4
4	5
5	10
6	10
7	20
8	22
9	37
10	40
11	80
12	72
13	144
14	158
15	278
16	283
17	566
18	548
19	1096
20	1120
21	2106
22	2162
23	4324
24	4210
25	8389
26	8584
27	16650
28	16772
29	33544
30	33194
31	66388
32	66968
33	131882
34	132690
35	265222
36	263607
37	527214
38	530138
39	1052078
40	1054254
41	2108508
42	2103282
43	4206564
44	4216760

[1, 2, 4, 5, 10, 10, 20, 22, 37, 40, 80, 72, 144, 158, 278, 283, 566, 548, 1096, 1120, 2106, 2162, 4324, 4210, 8389, 8584, 16650, 16772, 33544, 33194, 66388, 66968, 131882, 132690, 265222, 263607, 527214, 530138, 1052078, 1054254, 2108508, 2103282, 4206564, 4216760]

cp's OEIS Frontend

A198383 a(n) = Sum_{k=1..n} 2^(n mod k).

Table of values

List of values