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.

A145773 Number of n X n binary arrays with all ones connected only either two adjacent vertically or two adjacent horizontally.

Table of values

n a(n)
1 1
2 5
3 25
4 314
5 7358
6 349511
7 32855368
8 6141909014
9 2284689480141
10 1689669248970784
11 2485350221377308028
12 7269523179423750332937
13 42286820404292801713317670
14 489171492515135237008883532896

List of values

[1, 5, 25, 314, 7358, 349511, 32855368, 6141909014, 2284689480141, 1689669248970784, 2485350221377308028, 7269523179423750332937, 42286820404292801713317670, 489171492515135237008883532896]

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

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