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.

A269210 Number of n X 4 0..3 arrays with some element plus some horizontally, diagonally or antidiagonally adjacent neighbor totalling three exactly once.

Table of values

n a(n)
1 108
2 6528
3 308544
4 12548544
5 474091776
6 17118725376
7 599456856000
8 20531285093184
9 691495131961728
10 22985647571590272
11 756022683316823616
12 24651356966323488960
13 797979183054277922304
14 25672248307708057755648

List of values

[108, 6528, 308544, 12548544, 474091776, 17118725376, 599456856000, 20531285093184, 691495131961728, 22985647571590272, 756022683316823616, 24651356966323488960, 797979183054277922304, 25672248307708057755648]

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

Content is available under The OEIS End-User License Agreement.