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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.

A208298 Number of nX4 nonnegative integer arrays with new values 0 upwards introduced in row major order and no element equal to any horizontal or antidiagonal neighbor (colorings ignoring permutations of colors).

Table of values

n a(n)
1 5
2 602
3 373780
4 656404264
5 2475181138384
6 17131843186425504
7 196551307092757144384
8 3478554309451804194287232
9 90015726535715347904300537088
10 3267494997828691666636390741293568

List of values

[5, 602, 373780, 656404264, 2475181138384, 17131843186425504, 196551307092757144384, 3478554309451804194287232, 90015726535715347904300537088, 3267494997828691666636390741293568]

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

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