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.

A202519 G.f. satisfies: A(x) = exp( Sum_{n>=1} (2*A(x) + (-1)^n)^n * x^n/n ).

Table of values

n a(n)
0 1
1 1
2 7
3 27
4 165
5 877
6 5451
7 32887
8 210505
9 1347865
10 8859695
11 58647219
12 393704205
13 2662542565
14 18166847507
15 124738843247
16 861922384657
17 5986483380145
18 41780493605719
19 292817777533259
20 2060138522838645
21 14544377538584925
22 103007560370361691
23 731635362026777831

List of values

[1, 1, 7, 27, 165, 877, 5451, 32887, 210505, 1347865, 8859695, 58647219, 393704205, 2662542565, 18166847507, 124738843247, 861922384657, 5986483380145, 41780493605719, 292817777533259, 2060138522838645, 14544377538584925, 103007560370361691, 731635362026777831]