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.

A264135 Number of (4+1)X(n+1) arrays of permutations of 0..n*5+4 with each element having index change +-(.,.) 0,0 0,2 or 1,2.

Table of values

n a(n)
1 1
2 89
3 7921
4 178000
5 4000000
6 160564000
7 6445199524
8 219637743496
9 7484754845584
10 273712171834464
11 10009459836154944
12 358827105960491520
13 12863520517551001600
14 465176569014432986560
15 16821929895847549418521

List of values

[1, 89, 7921, 178000, 4000000, 160564000, 6445199524, 219637743496, 7484754845584, 273712171834464, 10009459836154944, 358827105960491520, 12863520517551001600, 465176569014432986560, 16821929895847549418521]