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.

A202399 Number of (n+2)X3 binary arrays avoiding patterns 000 and 010 in rows and columns.

Table of values

n a(n)
1 126
2 441
3 1785
4 7225
5 27880
6 107584
7 422136
8 1656369
9 6459453
10 25190361
11 98462742
12 384865924
13 1503033070
14 5869858225
15 22931405805
16 89584680249
17 349930588752
18 1366878986496
19 5339482693488
20 20857790423089
21 81475946359561

List of values

[126, 441, 1785, 7225, 27880, 107584, 422136, 1656369, 6459453, 25190361, 98462742, 384865924, 1503033070, 5869858225, 22931405805, 89584680249, 349930588752, 1366878986496, 5339482693488, 20857790423089, 81475946359561]

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

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