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.

A345365 a(n) = (2*n)!*Pi^(-2*n)*PolyLog(2*n, 1)*Clausen(2*n - 1)/2, where Clausen(n) = A160014(n, 1).

Table of values

n a(n)
1 1
2 4
3 16
4 64
5 1280
6 707584
7 28672
8 59260928
9 2874867712
10 45773225984
11 896021823488
12 991382852337664
13 143497256501248
14 1593799350268461056
15 2312797281748024033280
16 8277820436597920759808
17 11071085050982544965632
18 452092922822895257024443973632

List of values

[1, 4, 16, 64, 1280, 707584, 28672, 59260928, 2874867712, 45773225984, 896021823488, 991382852337664, 143497256501248, 1593799350268461056, 2312797281748024033280, 8277820436597920759808, 11071085050982544965632, 452092922822895257024443973632]