A049962 - cp's OEIS frontend

A049962 a(n) = a(1) + a(2) + ... + a(n-1) + a(m) for n >= 4, where m = n - 1 - 2^p 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) = 4.

n	a(n)
1	1
2	2
3	4
4	8
5	17
6	33
7	67
8	136
9	276
10	545
11	1091
12	2184
13	4372
14	8753
15	17522
16	35078
17	70225
18	140315
19	280631
20	561264
21	1122532
22	2245073
23	4490162
24	8980358
25	17960785
26	35921710
27	71843689
28	143687924
29	287376941
30	574756070
31	1149516521
32	2299041811

[1, 2, 4, 8, 17, 33, 67, 136, 276, 545, 1091, 2184, 4372, 8753, 17522, 35078, 70225, 140315, 280631, 561264, 1122532, 2245073, 4490162, 8980358, 17960785, 35921710, 71843689, 143687924, 287376941, 574756070, 1149516521, 2299041811]

cp's OEIS Frontend

A049962 a(n) = a(1) + a(2) + ... + a(n-1) + a(m) for n >= 4, where m = n - 1 - 2^p 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) = 4.

Table of values

List of values