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.

A200978 Number of ways to arrange n books on 3 consecutive shelves leaving none of the shelves empty.

Table of values

n a(n)
3 6
4 72
5 720
6 7200
7 75600
8 846720
9 10160640
10 130636800
11 1796256000
12 26345088000
13 410983372800
14 6799906713600
15 118998367488000
16 2196892938240000
17 42682491371520000
18 870722823979008000
19 18611700362551296000
20 416026243398205440000

List of values

[6, 72, 720, 7200, 75600, 846720, 10160640, 130636800, 1796256000, 26345088000, 410983372800, 6799906713600, 118998367488000, 2196892938240000, 42682491371520000, 870722823979008000, 18611700362551296000, 416026243398205440000]

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

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