A199257 - cp's OEIS frontend

A199257 G.f. satisfies: A(x) = exp( Sum_{n>=1} [Sum_{k=0..2n} C(2n,k)^2 * x^k * A(x)^k]* x^n/n ).

n	a(n)
0	1
1	1
2	5
3	18
4	86
5	408
6	2075
7	10787
8	57655
9	313643
10	1733450
11	9700574
12	54867895
13	313145033
14	1801150861
15	10430094658
16	60758092753
17	355795743385
18	2093295146379
19	12367548160650
20	73346850194969
21	436486017193373
22	2605656191324094
23	15599323024019360
24	93634195155551584

[1, 1, 5, 18, 86, 408, 2075, 10787, 57655, 313643, 1733450, 9700574, 54867895, 313145033, 1801150861, 10430094658, 60758092753, 355795743385, 2093295146379, 12367548160650, 73346850194969, 436486017193373, 2605656191324094, 15599323024019360, 93634195155551584]

cp's OEIS Frontend

A199257 G.f. satisfies: A(x) = exp( Sum_{n>=1} [Sum_{k=0..2n} C(2n,k)^2 * x^k * A(x)^k]* x^n/n ).

Table of values

List of values

cp's OEIS Frontend

A199257 G.f. satisfies: A(x) = exp( Sum_{n>=1} [Sum_{k=0..2*n} C(2*n,k)^2 * x^k * A(x)^k]* x^n/n ).

Table of values

List of values

A199257 G.f. satisfies: A(x) = exp( Sum_{n>=1} [Sum_{k=0..2n} C(2n,k)^2 * x^k * A(x)^k]* x^n/n ).