A049946 - cp's OEIS frontend

A049946 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) = a(2) = 1 and a(3) = 4.

n	a(n)
1	1
2	1
3	4
4	7
5	14
6	28
7	56
8	115
9	233
10	460
11	920
12	1843
13	3689
14	7385
15	14784
16	29596
17	59251
18	118388
19	236776
20	473555
21	947113
22	1894233
23	3788480
24	7576988
25	15154035
26	30308188
27	60616603
28	121233666
29	242468255
30	484938356
31	969880408
32	1939768215

[1, 1, 4, 7, 14, 28, 56, 115, 233, 460, 920, 1843, 3689, 7385, 14784, 29596, 59251, 118388, 236776, 473555, 947113, 1894233, 3788480, 7576988, 15154035, 30308188, 60616603, 121233666, 242468255, 484938356, 969880408, 1939768215]

cp's OEIS Frontend

A049946 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) = a(2) = 1 and a(3) = 4.

Table of values

List of values