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.

A196806 Number of nX5 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 4,2,3,0,1 for x=0,1,2,3,4.

Table of values

n a(n)
1 1
2 17
3 120
4 1515
5 19449
6 166682
7 1730105
8 18344433
9 186996068
10 1929020093
11 20000798340
12 205893266832
13 2122824479646
14 21911879424345
15 226005819417517
16 2331282643796687
17 24051519818547252
18 248109780944578426

List of values

[1, 17, 120, 1515, 19449, 166682, 1730105, 18344433, 186996068, 1929020093, 20000798340, 205893266832, 2122824479646, 21911879424345, 226005819417517, 2331282643796687, 24051519818547252, 248109780944578426]

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

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