A052909 - cp's OEIS frontend

A052909 Expansion of g.f. (1+x-x^2)/((1-x)(1-3x)).

n	a(n)
0	1
1	5
2	16
3	49
4	148
5	445
6	1336
7	4009
8	12028
9	36085
10	108256
11	324769
12	974308
13	2922925
14	8768776
15	26306329
16	78918988
17	236756965
18	710270896
19	2130812689
20	6392438068
21	19177314205
22	57531942616
23	172595827849
24	517787483548
25	1553362450645

[1, 5, 16, 49, 148, 445, 1336, 4009, 12028, 36085, 108256, 324769, 974308, 2922925, 8768776, 26306329, 78918988, 236756965, 710270896, 2130812689, 6392438068, 19177314205, 57531942616, 172595827849, 517787483548, 1553362450645]

cp's OEIS Frontend

A052909 Expansion of g.f. (1+x-x^2)/((1-x)(1-3x)).

Table of values

List of values

cp's OEIS Frontend

A052909 Expansion of g.f. (1+x-x^2)/((1-x)*(1-3*x)).

Table of values

List of values

A052909 Expansion of g.f. (1+x-x^2)/((1-x)(1-3x)).