A201355 - cp's OEIS frontend

A201355 Expansion of e.g.f.: 3exp(3x) / (4 - exp(3*x)).

n	a(n)
0	1
1	4
2	20
3	132
4	1140
5	12324
6	160020
7	2424132
8	41967540
9	817374564
10	17688328020
11	421061260932
12	10934334077940
13	307610736087204
14	9319558144624020
15	302518807147502532
16	10474617188712332340
17	385347795973248950244
18	15010362565222418008020
19	617178205591321673884932

[1, 4, 20, 132, 1140, 12324, 160020, 2424132, 41967540, 817374564, 17688328020, 421061260932, 10934334077940, 307610736087204, 9319558144624020, 302518807147502532, 10474617188712332340, 385347795973248950244, 15010362565222418008020, 617178205591321673884932]

cp's OEIS Frontend

A201355 Expansion of e.g.f.: 3exp(3x) / (4 - exp(3*x)).

Table of values

List of values

cp's OEIS Frontend

A201355 Expansion of e.g.f.: 3*exp(3*x) / (4 - exp(3*x)).

Table of values

List of values

A201355 Expansion of e.g.f.: 3exp(3x) / (4 - exp(3*x)).