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.

A269138 Number of nX3 0..3 arrays with some element plus some horizontally, antidiagonally or vertically adjacent neighbor totalling three no more than once.

Table of values

n a(n)
1 60
2 1164
3 18556
4 275796
5 3924212
6 54199284
7 732561916
8 9740150372
9 127846717716
10 1660741102212
11 21389485726684
12 273519303765844
13 3476418550368820
14 43954347343683220
15 553215363420258236
16 6935081471870462788

List of values

[60, 1164, 18556, 275796, 3924212, 54199284, 732561916, 9740150372, 127846717716, 1660741102212, 21389485726684, 273519303765844, 3476418550368820, 43954347343683220, 553215363420258236, 6935081471870462788]

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

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