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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.

A185562 1/4 the number of n X 4 0..3 arrays with no element equal both to the element above and to the element to its left.

Table of values

n a(n)
1 64
2 13500
3 2842560
4 598507920
5 126017211780
6 26533211918040
7 5586628402633500
8 1176277376648694960
9 247667889663690066720
10 52147040135402715629580
11 10979678466093753927519840
12 2311796391622216326875508300

List of values

[64, 13500, 2842560, 598507920, 126017211780, 26533211918040, 5586628402633500, 1176277376648694960, 247667889663690066720, 52147040135402715629580, 10979678466093753927519840, 2311796391622216326875508300]

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

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