A122006 - cp's OEIS frontend

A122006 Expansion of x^2(1-x)/((1-3x)(1-3x^2)).

n	a(n)
1	0
2	1
3	2
4	9
5	24
6	81
7	234
8	729
9	2160
10	6561
11	19602
12	59049
13	176904
14	531441
15	1593594
16	4782969
17	14346720
18	43046721
19	129133602
20	387420489
21	1162241784
22	3486784401
23	10460294154
24	31381059609
25	94143001680
26	282429536481
27	847288078002
28	2541865828329
29	7625595890664

[0, 1, 2, 9, 24, 81, 234, 729, 2160, 6561, 19602, 59049, 176904, 531441, 1593594, 4782969, 14346720, 43046721, 129133602, 387420489, 1162241784, 3486784401, 10460294154, 31381059609, 94143001680, 282429536481, 847288078002, 2541865828329, 7625595890664]

cp's OEIS Frontend

A122006 Expansion of x^2(1-x)/((1-3x)(1-3x^2)).

Table of values

List of values

cp's OEIS Frontend

A122006 Expansion of x^2*(1-x)/((1-3*x)*(1-3*x^2)).

Table of values

List of values

A122006 Expansion of x^2(1-x)/((1-3x)(1-3x^2)).