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.

A264153 a(n) = ((2*n)!)^2 / 2^n.

Table of values

n a(n)
0 1
1 2
2 144
3 64800
4 101606400
5 411505920000
6 3585039575040000
7 59375425441812480000
8 1710012252724199424000000
9 80059353648041568632832000000
10 5780285333388601255290470400000000
11 616883611349898303167109582028800000000
12 93983451956379706284115479041251737600000000

List of values

[1, 2, 144, 64800, 101606400, 411505920000, 3585039575040000, 59375425441812480000, 1710012252724199424000000, 80059353648041568632832000000, 5780285333388601255290470400000000, 616883611349898303167109582028800000000, 93983451956379706284115479041251737600000000]

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

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