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.

A202194 Number of (n+2)X(n+2) binary arrays avoiding patterns 001 and 101 in rows and columns.

Table of values

n a(n)
1 108
2 640
3 3500
4 18144
5 90552
6 439296
7 2084940
8 9724000
9 44710952
10 203164416
11 914004728
12 4077035200
13 18052470000
14 79420170240
15 347424465420
16 1512176830560
17 6552247686600
18 28276211040000
19 121580638419240
20 521033622457920

List of values

[108, 640, 3500, 18144, 90552, 439296, 2084940, 9724000, 44710952, 203164416, 914004728, 4077035200, 18052470000, 79420170240, 347424465420, 1512176830560, 6552247686600, 28276211040000, 121580638419240, 521033622457920]

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

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