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.

A307489 G.f. A(x) satisfies: A(x) = 1/(1 - 2*x*A(x) - x*A(x)/(1 - x*A(x)/(1 - x*A(x)/(1 - ...)))), a continued fraction.

Table of values

n a(n)
0 1
1 3
2 19
3 152
4 1367
5 13195
6 133556
7 1398696
8 15029311
9 164764985
10 1835614027
11 20722066612
12 236524088612
13 2725081792932
14 31649837891768
15 370161223462480
16 4355751419996559
17 51532214460643957
18 612604251998847641
19 7313900470316335280
20 87659840436181657215

List of values

[1, 3, 19, 152, 1367, 13195, 133556, 1398696, 15029311, 164764985, 1835614027, 20722066612, 236524088612, 2725081792932, 31649837891768, 370161223462480, 4355751419996559, 51532214460643957, 612604251998847641, 7313900470316335280, 87659840436181657215]