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.

A110706 Number of linear arrangements of n blue, n red and n green items such that there are no adjacent items of the same color.

Table of values

n a(n)
0 1
1 6
2 30
3 174
4 1092
5 7188
6 48852
7 339720
8 2403588
9 17236524
10 124948668
11 913820460
12 6732898800
13 49918950240
14 372104853600
15 2786716100592
16 20955408717396
17 158149624268220
18 1197390368733804
19 9091866006950892
20 69214297980023256
21 528150412279712856

List of values

[1, 6, 30, 174, 1092, 7188, 48852, 339720, 2403588, 17236524, 124948668, 913820460, 6732898800, 49918950240, 372104853600, 2786716100592, 20955408717396, 158149624268220, 1197390368733804, 9091866006950892, 69214297980023256, 528150412279712856]

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

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