A243227 - cp's OEIS frontend

A243227 G.f.: Sum_{n>=0} n^(2n) x^n / (1 + n^2*x)^n.

n	a(n)
0	1
1	1
2	15
3	602
4	46620
5	5921520
6	1118557440
7	294293759760
8	102896614941120
9	46150861752777600
10	25832386565857872000
11	17651395149921751680000
12	14460364581345685626624000
13	13990151265412450143375360000
14	15782226575197809064309171200000
15	20533602558350213132577801792768000

[1, 1, 15, 602, 46620, 5921520, 1118557440, 294293759760, 102896614941120, 46150861752777600, 25832386565857872000, 17651395149921751680000, 14460364581345685626624000, 13990151265412450143375360000, 15782226575197809064309171200000, 20533602558350213132577801792768000]

cp's OEIS Frontend

A243227 G.f.: Sum_{n>=0} n^(2n) x^n / (1 + n^2*x)^n.

Table of values

List of values

cp's OEIS Frontend

A243227 G.f.: Sum_{n>=0} n^(2*n) * x^n / (1 + n^2*x)^n.

Table of values

List of values

A243227 G.f.: Sum_{n>=0} n^(2n) x^n / (1 + n^2*x)^n.