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.

A218673 O.g.f. satisfies: A(x) = Sum_{n>=0} n^n * x^n*A(n*x)^(2*n)/n! * exp(-n*x*A(n*x)^2).

Table of values

n a(n)
0 1
1 1
2 3
3 20
4 209
5 3173
6 67292
7 1970761
8 79764057
9 4490097388
10 354111363537
11 39360693851404
12 6193012446752244
13 1383433132321835172
14 439684769985895688173
15 199116777197880585373014
16 128631139424158036273736167
17 118640007280899188486618513612

List of values

[1, 1, 3, 20, 209, 3173, 67292, 1970761, 79764057, 4490097388, 354111363537, 39360693851404, 6193012446752244, 1383433132321835172, 439684769985895688173, 199116777197880585373014, 128631139424158036273736167, 118640007280899188486618513612]