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.

A205819 Number of (n+1) X 5 0..2 arrays with the number of clockwise edge increases in every 2 X 2 subblock unequal to the number of counterclockwise edge increases.

Table of values

n a(n)
1 492
2 2430
3 12318
4 67944
5 380568
6 2158482
7 12281976
8 70022628
9 399463842
10 2279603796
11 13010464716
12 74259457206
13 423858388308
14 2419327070832
15 13809259294038
16 78821939400948
17 449908555238976
18 2568038752491042

List of values

[492, 2430, 12318, 67944, 380568, 2158482, 12281976, 70022628, 399463842, 2279603796, 13010464716, 74259457206, 423858388308, 2419327070832, 13809259294038, 78821939400948, 449908555238976, 2568038752491042]

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

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