A174191 - cp's OEIS frontend

A174191 Expansion of (1+x)(2x-1)/((1-x)(x^2+2x-1)).

n	a(n)
0	1
1	2
2	3
3	6
4	13
5	30
6	71
7	170
8	409
9	986
10	2379
11	5742
12	13861
13	33462
14	80783
15	195026
16	470833
17	1136690
18	2744211
19	6625110
20	15994429
21	38613966
22	93222359
23	225058682
24	543339721
25	1311738122
26	3166815963
27	7645370046
28	18457556053
29	44560482150
30	107578520351

[1, 2, 3, 6, 13, 30, 71, 170, 409, 986, 2379, 5742, 13861, 33462, 80783, 195026, 470833, 1136690, 2744211, 6625110, 15994429, 38613966, 93222359, 225058682, 543339721, 1311738122, 3166815963, 7645370046, 18457556053, 44560482150, 107578520351]

cp's OEIS Frontend

A174191 Expansion of (1+x)(2x-1)/((1-x)(x^2+2x-1)).

Table of values

List of values

cp's OEIS Frontend

A174191 Expansion of (1+x)*(2*x-1)/((1-x)*(x^2+2*x-1)).

Table of values

List of values

A174191 Expansion of (1+x)(2x-1)/((1-x)(x^2+2x-1)).