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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.

A264138 Number of (n+1)X(4+1) arrays of permutations of 0..n*5+4 with each element having index change +-(.,.) 0,0 1,-2 or 1,1.

Table of values

n a(n)
1 45
2 720
3 15488
4 297920
5 5953600
6 117534144
7 2330885440
8 46152976320
9 914311870272
10 18109587264960
11 358715709133120
12 7105316641612736
13 140740716602145600
14 2787757236154376640
15 55219250117210191168

List of values

[45, 720, 15488, 297920, 5953600, 117534144, 2330885440, 46152976320, 914311870272, 18109587264960, 358715709133120, 7105316641612736, 140740716602145600, 2787757236154376640, 55219250117210191168]

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

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