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.

A228654 Number of n X n binary arrays with top left value 1 and no two ones adjacent horizontally, diagonally or antidiagonally.

Table of values

n a(n)
1 1
2 2
3 34
4 416
5 24109
6 1482892
7 337258048
8 99770848656
9 92600434253746
10 128571982215641568
11 497887042842429868023
12 3189515020018986830642404
13 52334113476786453501159739264
14 1527284319716267796002249895255726

List of values

[1, 2, 34, 416, 24109, 1482892, 337258048, 99770848656, 92600434253746, 128571982215641568, 497887042842429868023, 3189515020018986830642404, 52334113476786453501159739264, 1527284319716267796002249895255726]

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

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