A172390 - cp's OEIS frontend

A172390 G.f. satisfies: A(x) = G(x/A(x))^2 and G(x)^2 = A(xG(x)^2) where G(x) = Sum_{n>=0} C(2n,n)^2*x^n.

n	a(n)
0	1
1	8
2	24
3	0
4	-168
5	0
6	2112
7	0
8	-32040
9	0
10	536256
11	0
12	-9542976
13	0
14	177126912
15	0
16	-3390361128
17	0
18	66436117440
19	0
20	-1326185205696
21	0
22	26872637815296
23	0
24	-551301904867392
25	0
26	11428295231789568
27	0
28	-239010764560888320
29	0

[1, 8, 24, 0, -168, 0, 2112, 0, -32040, 0, 536256, 0, -9542976, 0, 177126912, 0, -3390361128, 0, 66436117440, 0, -1326185205696, 0, 26872637815296, 0, -551301904867392, 0, 11428295231789568, 0, -239010764560888320, 0]

cp's OEIS Frontend

A172390 G.f. satisfies: A(x) = G(x/A(x))^2 and G(x)^2 = A(xG(x)^2) where G(x) = Sum_{n>=0} C(2n,n)^2*x^n.

Table of values

List of values

cp's OEIS Frontend

A172390 G.f. satisfies: A(x) = G(x/A(x))^2 and G(x)^2 = A(x*G(x)^2) where G(x) = Sum_{n>=0} C(2*n,n)^2*x^n.

Table of values

List of values

A172390 G.f. satisfies: A(x) = G(x/A(x))^2 and G(x)^2 = A(xG(x)^2) where G(x) = Sum_{n>=0} C(2n,n)^2*x^n.