A085287 - cp's OEIS frontend

A085287 Expansion of g.f. (1+4x)/((1-x)(1+x)(1-3x)).

n	a(n)
0	1
1	7
2	22
3	70
4	211
5	637
6	1912
7	5740
8	17221
9	51667
10	155002
11	465010
12	1395031
13	4185097
14	12555292
15	37665880
16	112997641
17	338992927
18	1016978782
19	3050936350
20	9152809051
21	27458427157
22	82375281472
23	247125844420
24	741377533261
25	2224132599787
26	6672397799362
27	20017193398090

[1, 7, 22, 70, 211, 637, 1912, 5740, 17221, 51667, 155002, 465010, 1395031, 4185097, 12555292, 37665880, 112997641, 338992927, 1016978782, 3050936350, 9152809051, 27458427157, 82375281472, 247125844420, 741377533261, 2224132599787, 6672397799362, 20017193398090]

cp's OEIS Frontend

A085287 Expansion of g.f. (1+4x)/((1-x)(1+x)(1-3x)).

Table of values

List of values

cp's OEIS Frontend

A085287 Expansion of g.f. (1+4*x)/((1-x)*(1+x)*(1-3*x)).

Table of values

List of values

A085287 Expansion of g.f. (1+4x)/((1-x)(1+x)(1-3x)).