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.

A233022 Number of nX4 0..3 arrays with no element x(i,j) adjacent to value 3-x(i,j) horizontally, vertically, diagonally or antidiagonally, and top left element zero.

Table of values

n a(n)
1 27
2 435
3 8835
4 179999
5 3685017
6 75489671
7 1546718177
8 31692006853
9 649369155341
10 13305594622397
11 272632154901327
12 5586243967145293
13 114462368539181387
14 2345338645585949507
15 48056085480976430831
16 984671171688465647531

List of values

[27, 435, 8835, 179999, 3685017, 75489671, 1546718177, 31692006853, 649369155341, 13305594622397, 272632154901327, 5586243967145293, 114462368539181387, 2345338645585949507, 48056085480976430831, 984671171688465647531]

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

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