A255138 - cp's OEIS frontend

A255138 a(n) = (1 + 2^n(3 + 2(-1)^n))/3.

n	a(n)
0	2
1	1
2	7
3	3
4	27
5	11
6	107
7	43
8	427
9	171
10	1707
11	683
12	6827
13	2731
14	27307
15	10923
16	109227
17	43691
18	436907
19	174763
20	1747627
21	699051
22	6990507
23	2796203
24	27962027
25	11184811
26	111848107
27	44739243
28	447392427
29	178956971

[2, 1, 7, 3, 27, 11, 107, 43, 427, 171, 1707, 683, 6827, 2731, 27307, 10923, 109227, 43691, 436907, 174763, 1747627, 699051, 6990507, 2796203, 27962027, 11184811, 111848107, 44739243, 447392427, 178956971]

cp's OEIS Frontend

A255138 a(n) = (1 + 2^n(3 + 2(-1)^n))/3.

Table of values

List of values

cp's OEIS Frontend

A255138 a(n) = (1 + 2^n*(3 + 2*(-1)^n))/3.

Table of values

List of values

A255138 a(n) = (1 + 2^n(3 + 2(-1)^n))/3.