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.

A069424 Number of n X 4 binary arrays with a path of adjacent 1's and no path of adjacent 0's from top row to bottom row.

Table of values

n a(n)
1 1
2 65
3 1231
4 17339
5 217253
6 2575297
7 29682643
8 337104939
9 3798244149
10 42611591165
11 476921965419
12 5330934738199
13 59545502975241
14 664849480893793
15 7421696282496891
16 82838232515999423
17 924548372982432205
18 10318403957821437753
19 115156011527942405255

List of values

[1, 65, 1231, 17339, 217253, 2575297, 29682643, 337104939, 3798244149, 42611591165, 476921965419, 5330934738199, 59545502975241, 664849480893793, 7421696282496891, 82838232515999423, 924548372982432205, 10318403957821437753, 115156011527942405255]

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

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