A127984 - cp's OEIS frontend

A127984 a(n) = (n/3 + 7/9)*2^(n - 1) + (-1)^n/9.

n	a(n)
1	1
2	3
3	7
4	17
5	39
6	89
7	199
8	441
9	967
10	2105
11	4551
12	9785
13	20935
14	44601
15	94663
16	200249
17	422343
18	888377
19	1864135
20	3903033
21	8155591
22	17010233
23	35418567
24	73633337
25	152859079
26	316902969
27	656175559
28	1357090361
29	2803659207
30	5786275385
31	11930464711
32	24576757305

[1, 3, 7, 17, 39, 89, 199, 441, 967, 2105, 4551, 9785, 20935, 44601, 94663, 200249, 422343, 888377, 1864135, 3903033, 8155591, 17010233, 35418567, 73633337, 152859079, 316902969, 656175559, 1357090361, 2803659207, 5786275385, 11930464711, 24576757305]

cp's OEIS Frontend

A127984 a(n) = (n/3 + 7/9)*2^(n - 1) + (-1)^n/9.

Table of values

List of values