A039722 - cp's OEIS frontend

A039722 a(1) = 1, a(m+1) = 2*Sum_{k=1..floor((m+1)/2)} a(k).

n	a(n)
1	1
2	2
3	2
4	6
5	6
6	10
7	10
8	22
9	22
10	34
11	34
12	54
13	54
14	74
15	74
16	118
17	118
18	162
19	162
20	230
21	230
22	298
23	298
24	406
25	406
26	514
27	514
28	662
29	662
30	810
31	810
32	1046
33	1046
34	1282
35	1282
36	1606
37	1606
38	1930
39	1930
40	2390
41	2390
42	2850
43	2850
44	3446
45	3446
46	4042
47	4042
48	4854
49	4854
50	5666
51	5666
52	6694

[1, 2, 2, 6, 6, 10, 10, 22, 22, 34, 34, 54, 54, 74, 74, 118, 118, 162, 162, 230, 230, 298, 298, 406, 406, 514, 514, 662, 662, 810, 810, 1046, 1046, 1282, 1282, 1606, 1606, 1930, 1930, 2390, 2390, 2850, 2850, 3446, 3446, 4042, 4042, 4854, 4854, 5666, 5666, 6694]

cp's OEIS Frontend

A039722 a(1) = 1, a(m+1) = 2*Sum_{k=1..floor((m+1)/2)} a(k).

Table of values

List of values