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.

A203538 Number of nX4 0..2 arrays with every element neighboring horizontally or vertically both a 0 and a 1.

Table of values

n a(n)
1 0
2 16
3 144
4 3364
5 30976
6 614656
7 8479744
8 129504400
9 1978826256
10 29961532836
11 454089995044
12 6895434839056
13 104626058201344
14 1587468792674704
15 24091008317030656
16 365573436678862864
17 5547427717263648804

List of values

[0, 16, 144, 3364, 30976, 614656, 8479744, 129504400, 1978826256, 29961532836, 454089995044, 6895434839056, 104626058201344, 1587468792674704, 24091008317030656, 365573436678862864, 5547427717263648804]

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

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