A050045 - cp's OEIS frontend

A050045 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 and a(2) = a(3) = 2.

n	a(n)
1	1
2	2
3	2
4	4
5	5
6	9
7	11
8	13
9	14
10	27
11	38
12	47
13	52
14	56
15	58
16	60
17	61
18	121
19	179
20	235
21	287
22	334
23	372
24	399
25	413
26	426
27	437
28	446
29	451
30	455
31	457
32	459
33	460
34	919
35	1376
36	1831
37	2282
38	2728
39	3165
40	3591
41	4004
42	4403
43	4775
44	5109
45	5396
46	5631
47	5810
48	5931

[1, 2, 2, 4, 5, 9, 11, 13, 14, 27, 38, 47, 52, 56, 58, 60, 61, 121, 179, 235, 287, 334, 372, 399, 413, 426, 437, 446, 451, 455, 457, 459, 460, 919, 1376, 1831, 2282, 2728, 3165, 3591, 4004, 4403, 4775, 5109, 5396, 5631, 5810, 5931]

cp's OEIS Frontend

A050045 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 and a(2) = a(3) = 2.

Table of values

List of values