A050057 - cp's OEIS frontend

A050057 a(n) = a(n-1) + a(m) for n >= 4, where m = 2^(p+1) + 2 - n and p is the unique integer such that 2^p < n - 1 <= 2^(p+1), starting with a(1) = 1, a(2) = 3, and a(3) = 1.

n	a(n)
1	1
2	3
3	1
4	4
5	5
6	9
7	10
8	13
9	14
10	27
11	37
12	46
13	51
14	55
15	56
16	59
17	60
18	119
19	175
20	230
21	281
22	327
23	364
24	391
25	405
26	418
27	428
28	437
29	442
30	446
31	447
32	450
33	451
34	901
35	1348
36	1794
37	2236
38	2673
39	3101
40	3519
41	3924
42	4315
43	4679
44	5006
45	5287
46	5517
47	5692
48	5811

[1, 3, 1, 4, 5, 9, 10, 13, 14, 27, 37, 46, 51, 55, 56, 59, 60, 119, 175, 230, 281, 327, 364, 391, 405, 418, 428, 437, 442, 446, 447, 450, 451, 901, 1348, 1794, 2236, 2673, 3101, 3519, 3924, 4315, 4679, 5006, 5287, 5517, 5692, 5811]

cp's OEIS Frontend

A050057 a(n) = a(n-1) + a(m) for n >= 4, where m = 2^(p+1) + 2 - n and p is the unique integer such that 2^p < n - 1 <= 2^(p+1), starting with a(1) = 1, a(2) = 3, and a(3) = 1.

Table of values

List of values