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.

A012258 Expansion of e.g.f.: exp(arctanh(arcsin(x)))=1+x+1/2!*x^2+4/3!*x^3+13/4!*x^4+84/5!*x^5...

Table of values

n a(n)
0 1
1 1
2 1
3 4
4 13
5 84
6 469
7 4152
8 32985
9 370128
10 3818601
11 51861888
12 658371429
13 10494283968
14 158197312701
15 2894815734912
16 50529852678321
17 1043916757274880
18 20707179214389201
19 476720372375608320

List of values

[1, 1, 1, 4, 13, 84, 469, 4152, 32985, 370128, 3818601, 51861888, 658371429, 10494283968, 158197312701, 2894815734912, 50529852678321, 1043916757274880, 20707179214389201, 476720372375608320]