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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.

A217268 Number of n X 3 arrays of occupancy after each element moves to some horizontal or vertical neighbor.

Table of values

n a(n)
1 2
2 64
3 1472
4 33856
5 772800
6 17640000
7 402494400
8 9183772224
9 209543184576
10 4781079618624
11 109088244863424
12 2489028863068224
13 56791310102324928
14 1295787666826276416
15 29565538631067860928
16 674586660240498844224

List of values

[2, 64, 1472, 33856, 772800, 17640000, 402494400, 9183772224, 209543184576, 4781079618624, 109088244863424, 2489028863068224, 56791310102324928, 1295787666826276416, 29565538631067860928, 674586660240498844224]

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

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