A204066 - cp's OEIS frontend

A204066 G.f.: Sum_{n>=0} x^n * Product_{k=1..n} (n + kx) / (1 + nx + k*x^2).

n	a(n)
0	1
1	1
2	4
3	16
4	82
5	502
6	3574
7	29002
8	264166
9	2668666
10	29612014
11	358025986
12	4684916902
13	65966957722
14	994546450174
15	15984888286642
16	272845934899606
17	4929166716321706
18	93963635086523374
19	1884915966747571906
20	39691711412770983622
21	875410001054417122042
22	20180907494704416823774

[1, 1, 4, 16, 82, 502, 3574, 29002, 264166, 2668666, 29612014, 358025986, 4684916902, 65966957722, 994546450174, 15984888286642, 272845934899606, 4929166716321706, 93963635086523374, 1884915966747571906, 39691711412770983622, 875410001054417122042, 20180907494704416823774]

cp's OEIS Frontend

A204066 G.f.: Sum_{n>=0} x^n * Product_{k=1..n} (n + kx) / (1 + nx + k*x^2).

Table of values

List of values

cp's OEIS Frontend

A204066 G.f.: Sum_{n>=0} x^n * Product_{k=1..n} (n + k*x) / (1 + n*x + k*x^2).

Table of values

List of values

A204066 G.f.: Sum_{n>=0} x^n * Product_{k=1..n} (n + kx) / (1 + nx + k*x^2).