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.

A232379 Number of 4Xn 0..3 arrays with every 0 next to a 1, every 1 next to a 2 and every 2 next to a 3 horizontally, diagonally or antidiagonally, and no adjacent values equal.

Table of values

n a(n)
1 1
2 230
3 4550
4 63744
5 927706
6 14326374
7 219597458
8 3342549408
9 50948669958
10 777136688838
11 11852126079904
12 180743308881776
13 2756349347909628
14 42034903671321438
15 641040165008121734
16 9775973027252581380

List of values

[1, 230, 4550, 63744, 927706, 14326374, 219597458, 3342549408, 50948669958, 777136688838, 11852126079904, 180743308881776, 2756349347909628, 42034903671321438, 641040165008121734, 9775973027252581380]

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

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