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.

A207723 Number of n X n 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 1 1 and 1 0 1 vertically.

Table of values

n a(n)
1 2
2 16
3 78
4 441
5 8575
6 277729
7 4799749
8 93547584
9 8978585264
10 1701743731081
11 92421758243781
12 5198831216732241
13 3314060538084914409
14 4426079717506620317769
15 675694617961142291654422

List of values

[2, 16, 78, 441, 8575, 277729, 4799749, 93547584, 8978585264, 1701743731081, 92421758243781, 5198831216732241, 3314060538084914409, 4426079717506620317769, 675694617961142291654422]

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

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