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.

A046857 a(n) = (2^n)!/(n!^2).

Table of values

n a(n)
1 2
2 6
3 1120
4 36324288000
5 18272974787062050706056806400000
6 244766458691906180755079840538505942906762183978675139272380197483053056000000000000

List of values

[2, 6, 1120, 36324288000, 18272974787062050706056806400000, 244766458691906180755079840538505942906762183978675139272380197483053056000000000000]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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