A176965 - cp's OEIS frontend

A176965 a(n) = 2^(n-1) - (2^n*(-1)^n + 2)/3.

n	a(n)
1	1
2	0
3	6
4	2
5	26
6	10
7	106
8	42
9	426
10	170
11	1706
12	682
13	6826
14	2730
15	27306
16	10922
17	109226
18	43690
19	436906
20	174762
21	1747626
22	699050
23	6990506
24	2796202
25	27962026
26	11184810
27	111848106
28	44739242
29	447392426
30	178956970
31	1789569706
32	715827882
33	7158278826

[1, 0, 6, 2, 26, 10, 106, 42, 426, 170, 1706, 682, 6826, 2730, 27306, 10922, 109226, 43690, 436906, 174762, 1747626, 699050, 6990506, 2796202, 27962026, 11184810, 111848106, 44739242, 447392426, 178956970, 1789569706, 715827882, 7158278826]

cp's OEIS Frontend

A176965 a(n) = 2^(n-1) - (2^n*(-1)^n + 2)/3.

Table of values

List of values