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.

A220113 E.g.f. A(x)=sum{n>0, a(n)x^(2*n-1)/(2*n-1)!} satisfies A(A(x))=sin(2*x)/2.

Table of values

n a(n)
1 1
2 -2
3 -12
4 -424
5 -29808
6 -2966816
7 -237449920
8 76118167936
9 84317834342656
10 53499781544238592
11 20080969948883956736
12 -10740526073453596649472
13 -31099457241702481710116864

List of values

[1, -2, -12, -424, -29808, -2966816, -237449920, 76118167936, 84317834342656, 53499781544238592, 20080969948883956736, -10740526073453596649472, -31099457241702481710116864]