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.

A232298 Number of 4Xn 0..2 arrays with every 0 next to a 1 and every 1 next to a 2 horizontally or antidiagonally.

Table of values

n a(n)
1 1
2 355
3 17759
4 718483
5 31119789
6 1370434057
7 60054788123
8 2629547976059
9 115168967578383
10 5044363984412427
11 220938351417726213
12 9676874008509774099
13 423837490846852109695
14 18563663237964339458229
15 813070077580205734910151

List of values

[1, 355, 17759, 718483, 31119789, 1370434057, 60054788123, 2629547976059, 115168967578383, 5044363984412427, 220938351417726213, 9676874008509774099, 423837490846852109695, 18563663237964339458229, 813070077580205734910151]

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

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