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.

A371147 E.g.f. satisfies A(x) = 1/(1 - x*A(x))^(x^2*A(x)^2).

Table of values

n a(n)
0 1
1 0
2 0
3 6
4 12
5 40
6 2700
7 21168
8 173040
9 7611840
10 125415360
11 1848591360
12 71211998880
13 1844075600640
14 41500836336960
15 1609925690419200
16 55708371912211200
17 1719475797882286080
18 72091120665964654080
19 3046645011228998860800
20 119757727692451283097600

List of values

[1, 0, 0, 6, 12, 40, 2700, 21168, 173040, 7611840, 125415360, 1848591360, 71211998880, 1844075600640, 41500836336960, 1609925690419200, 55708371912211200, 1719475797882286080, 72091120665964654080, 3046645011228998860800, 119757727692451283097600]