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.

A183814 1/81 the number of (n+1) X 4 0..2 arrays with no 2 X 2 subblock being a reflection across the shared element pair of any horizontal or vertical neighbor.

Table of values

n a(n)
1 64
2 3256
3 163208
4 8231592
5 414246824
6 20864057480
7 1050517114472
8 52900274426120
9 2663752907479720
10 134133403972622152
11 6754253376412941416
12 340109468142471752968
13 17126149629153540430376
14 862384378029691966195144

List of values

[64, 3256, 163208, 8231592, 414246824, 20864057480, 1050517114472, 52900274426120, 2663752907479720, 134133403972622152, 6754253376412941416, 340109468142471752968, 17126149629153540430376, 862384378029691966195144]

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

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