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.

A004193 a(n) = -(-1)^n*2*(2*n+1)!*Bernoulli(2*n)/(n!*2^n).

Table of values

n a(n)
1 1
2 1
3 5
4 63
5 1575
6 68409
7 4729725
8 488783295
9 71982456975
10 14550187083705
11 3916321542458325
12 1368981608178405375
13 608576219802039864375
14 337967570725260384533625
15 230885276313275432674678125
16 191452972504088518574149173375
17 190442238700388913304502070009375

List of values

[1, 1, 5, 63, 1575, 68409, 4729725, 488783295, 71982456975, 14550187083705, 3916321542458325, 1368981608178405375, 608576219802039864375, 337967570725260384533625, 230885276313275432674678125, 191452972504088518574149173375, 190442238700388913304502070009375]