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.

A228384 Number of n X n binary arrays with top left value 1 and no two ones adjacent horizontally or vertically.

Table of values

n a(n)
1 1
2 2
3 21
4 382
5 17578
6 1755243
7 402968942
8 207573951234
9 242284444195349
10 638096588519781536
11 3798652903378388363280
12 51076133156779686951912785
13 1551660182965034835583479000348
14 106488245934766828340647881986248382

List of values

[1, 2, 21, 382, 17578, 1755243, 402968942, 207573951234, 242284444195349, 638096588519781536, 3798652903378388363280, 51076133156779686951912785, 1551660182965034835583479000348, 106488245934766828340647881986248382]

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

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