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.

A205886 E.g.f. satisfies: A(x) = x + arctanh(A(x))^2.

Table of values

n a(n)
1 1
2 2
3 12
4 136
5 2160
6 44048
7 1098048
8 32353536
9 1100025600
10 42390108672
11 1825776471552
12 86917798041600
13 4531977405935616
14 256853921275299840
15 15722230877270212608
16 1033667815031620239360
17 72646598313232772038656
18 5435067361538551649402880

List of values

[1, 2, 12, 136, 2160, 44048, 1098048, 32353536, 1100025600, 42390108672, 1825776471552, 86917798041600, 4531977405935616, 256853921275299840, 15722230877270212608, 1033667815031620239360, 72646598313232772038656, 5435067361538551649402880]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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