A098703 - cp's OEIS frontend

A098703 a(n) = (3^n + phi^(n-1) + (-phi)^(1-n)) / 5, where phi denotes the golden ratio A001622.

n	a(n)
0	0
1	1
2	2
3	6
4	17
5	50
6	148
7	441
8	1318
9	3946
10	11825
11	35454
12	106328
13	318929
14	956698
15	2869950
16	8609617
17	25828474
18	77484812
19	232453449
20	697358750
21	2092073666
22	6276216817
23	18828643686
24	56485920112
25	169457742625
26	508373199218
27	1525119551286

[0, 1, 2, 6, 17, 50, 148, 441, 1318, 3946, 11825, 35454, 106328, 318929, 956698, 2869950, 8609617, 25828474, 77484812, 232453449, 697358750, 2092073666, 6276216817, 18828643686, 56485920112, 169457742625, 508373199218, 1525119551286]

cp's OEIS Frontend

A098703 a(n) = (3^n + phi^(n-1) + (-phi)^(1-n)) / 5, where phi denotes the golden ratio A001622.

Table of values

List of values