A104161 - cp's OEIS frontend

A104161 G.f.: x(1 - x + x^2)/((1-x)^2 (1 - x - x^2)).

n	a(n)
0	0
1	1
2	2
3	5
4	10
5	19
6	34
7	59
8	100
9	167
10	276
11	453
12	740
13	1205
14	1958
15	3177
16	5150
17	8343
18	13510
19	21871
20	35400
21	57291
22	92712
23	150025
24	242760
25	392809
26	635594
27	1028429
28	1664050
29	2692507
30	4356586
31	7049123

[0, 1, 2, 5, 10, 19, 34, 59, 100, 167, 276, 453, 740, 1205, 1958, 3177, 5150, 8343, 13510, 21871, 35400, 57291, 92712, 150025, 242760, 392809, 635594, 1028429, 1664050, 2692507, 4356586, 7049123]

cp's OEIS Frontend

A104161 G.f.: x(1 - x + x^2)/((1-x)^2 (1 - x - x^2)).

Table of values

List of values

cp's OEIS Frontend

A104161 G.f.: x*(1 - x + x^2)/((1-x)^2 * (1 - x - x^2)).

Table of values

List of values

A104161 G.f.: x(1 - x + x^2)/((1-x)^2 (1 - x - x^2)).