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.

A232341 Number of 7Xn 0..2 arrays with every 0 next to a 1 and every 1 next to a 2 horizontally or antidiagonally, with no adjacent elements equal.

Table of values

n a(n)
1 1
2 754
3 22228
4 76630
5 2510674
6 9298730
7 318521414
8 1241196022
9 41049614014
10 168217753216
11 5314116600322
12 22881089512316
13 689018292976294
14 3108875283706072
15 89394192873266794
16 421515136439868122

List of values

[1, 754, 22228, 76630, 2510674, 9298730, 318521414, 1241196022, 41049614014, 168217753216, 5314116600322, 22881089512316, 689018292976294, 3108875283706072, 89394192873266794, 421515136439868122]

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

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