A172012 - cp's OEIS frontend

A172012 Expansion of (2-3x)/(1-3x-3*x^2) .

n	a(n)
0	2
1	3
2	15
3	54
4	207
5	783
6	2970
7	11259
8	42687
9	161838
10	613575
11	2326239
12	8819442
13	33437043
14	126769455
15	480619494
16	1822166847
17	6908359023
18	26191577610
19	99299809899
20	376474162527
21	1427321917278
22	5411388239415
23	20516130470079
24	77782556128482
25	294896059795683

[2, 3, 15, 54, 207, 783, 2970, 11259, 42687, 161838, 613575, 2326239, 8819442, 33437043, 126769455, 480619494, 1822166847, 6908359023, 26191577610, 99299809899, 376474162527, 1427321917278, 5411388239415, 20516130470079, 77782556128482, 294896059795683]

cp's OEIS Frontend

A172012 Expansion of (2-3x)/(1-3x-3*x^2) .

Table of values

List of values

cp's OEIS Frontend

A172012 Expansion of (2-3*x)/(1-3*x-3*x^2) .

Table of values

List of values

A172012 Expansion of (2-3x)/(1-3x-3*x^2) .