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.

A232593 Number of (4+1)X(n+1) 0..2 arrays with every element next to itself plus and minus one within the range 0..2 horizontally or antidiagonally, with no adjacent elements equal.

Table of values

n a(n)
1 6
2 456
3 122
4 6406
5 3002
6 93236
7 68072
8 1364998
9 1320362
10 20063788
11 24123134
12 296095446
13 423016306
14 4386696696
15 7216047494
16 65227876552
17 120687373030
18 973264614932
19 1988957705626
20 14569296892014
21 32409581296990

List of values

[6, 456, 122, 6406, 3002, 93236, 68072, 1364998, 1320362, 20063788, 24123134, 296095446, 423016306, 4386696696, 7216047494, 65227876552, 120687373030, 973264614932, 1988957705626, 14569296892014, 32409581296990]

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

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