cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A381785 G.f. A(x) satisfies A(x) = (1 + x) * C(x*A(x)^2), where C(x) is the g.f. of A000108.

Table of values

n a(n)
0 1
1 2
2 7
3 45
4 335
5 2731
6 23573
7 211741
8 1958571
9 18529392
10 178459000
11 1743868792
12 17246702932
13 172302244669
14 1736302280083
15 17627794322287
16 180133941044517
17 1851310247393202
18 19123511540724822
19 198437973436950204
20 2067524004169000212
21 21620908821378509071

List of values

[1, 2, 7, 45, 335, 2731, 23573, 211741, 1958571, 18529392, 178459000, 1743868792, 17246702932, 172302244669, 1736302280083, 17627794322287, 180133941044517, 1851310247393202, 19123511540724822, 198437973436950204, 2067524004169000212, 21620908821378509071]