A050033 - cp's OEIS frontend

A050033 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) = a(2) = 1 and a(3) = 3.

n	a(n)
1	1
2	1
3	3
4	4
5	5
6	9
7	12
8	13
9	14
10	27
11	39
12	48
13	53
14	57
15	60
16	61
17	62
18	123
19	183
20	240
21	293
22	341
23	380
24	407
25	421
26	434
27	446
28	455
29	460
30	464
31	467
32	468
33	469
34	937
35	1404
36	1868
37	2328
38	2783
39	3229
40	3663
41	4084
42	4491
43	4871
44	5212
45	5505
46	5745
47	5928
48	6051

[1, 1, 3, 4, 5, 9, 12, 13, 14, 27, 39, 48, 53, 57, 60, 61, 62, 123, 183, 240, 293, 341, 380, 407, 421, 434, 446, 455, 460, 464, 467, 468, 469, 937, 1404, 1868, 2328, 2783, 3229, 3663, 4084, 4491, 4871, 5212, 5505, 5745, 5928, 6051]

cp's OEIS Frontend

A050033 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) = a(2) = 1 and a(3) = 3.

Table of values

List of values