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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.

A136636 a(n) = n * C(2*3^(n-1), n) for n>=1.

Table of values

n a(n)
1 2
2 30
3 2448
4 1265004
5 4368213360
6 106458751541142
7 19173684851378353296
8 26413015283743616538733008
9 285290979402099025600644272168880
10 24601033850235942230699563821233785600080

List of values

[2, 30, 2448, 1265004, 4368213360, 106458751541142, 19173684851378353296, 26413015283743616538733008, 285290979402099025600644272168880, 24601033850235942230699563821233785600080]

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

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