A016142 - cp's OEIS frontend

A016142 Expansion of 1/((1-3x)(1-9*x)).

n	a(n)
0	1
1	12
2	117
3	1080
4	9801
5	88452
6	796797
7	7173360
8	64566801
9	581120892
10	5230147077
11	47071500840
12	423644039001
13	3812797945332
14	34315186290957
15	308836690967520
16	2779530261754401
17	25015772484929772
18	225141952751788437
19	2026277575928357400
20	18236498186842001001
21	164128483692038362212

[1, 12, 117, 1080, 9801, 88452, 796797, 7173360, 64566801, 581120892, 5230147077, 47071500840, 423644039001, 3812797945332, 34315186290957, 308836690967520, 2779530261754401, 25015772484929772, 225141952751788437, 2026277575928357400, 18236498186842001001, 164128483692038362212]

cp's OEIS Frontend

A016142 Expansion of 1/((1-3x)(1-9*x)).

Table of values

List of values

cp's OEIS Frontend

A016142 Expansion of 1/((1-3*x)*(1-9*x)).

Table of values

List of values

A016142 Expansion of 1/((1-3x)(1-9*x)).