A049949 - cp's OEIS frontend

A049949 a(n) = a(1) + a(2) + ... + 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) = 2, and a(3) = 1.

n	a(n)
1	1
2	2
3	1
4	6
5	11
6	27
7	49
8	99
9	197
10	492
11	934
12	1846
13	3676
14	7347
15	14689
16	29379
17	58757
18	146892
19	279094
20	550846
21	1098021
22	2194212
23	4387512
24	8774582
25	17548869
26	35097640
27	70195230
28	140390438
29	280780860
30	561561715
31	1123123425
32	2246246851

[1, 2, 1, 6, 11, 27, 49, 99, 197, 492, 934, 1846, 3676, 7347, 14689, 29379, 58757, 146892, 279094, 550846, 1098021, 2194212, 4387512, 8774582, 17548869, 35097640, 70195230, 140390438, 280780860, 561561715, 1123123425, 2246246851]

cp's OEIS Frontend

A049949 a(n) = a(1) + a(2) + ... + 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) = 2, and a(3) = 1.

Table of values

List of values