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.

A240627 Number of nX4 0..3 arrays with no element equal to exactly two horizontal and vertical neighbors, with new values 0..3 introduced in row major order.

Table of values

n a(n)
1 12
2 1332
3 180480
4 24648700
5 3367163455
6 459961775083
7 62832360051504
8 8583108386132548
9 1172481146489555199
10 160164822767286567296
11 21879047288760831684789
12 2988750601081901561336772

List of values

[12, 1332, 180480, 24648700, 3367163455, 459961775083, 62832360051504, 8583108386132548, 1172481146489555199, 160164822767286567296, 21879047288760831684789, 2988750601081901561336772]

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

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