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.

A207713 Number of nX4 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 0 1 and 1 0 0 vertically.

Table of values

n a(n)
1 10
2 100
3 450
4 2205
5 11970
6 66946
7 383845
8 2221688
9 12947130
10 75691595
11 443447550
12 2600917830
13 15265923595
14 89639239300
15 526483671750
16 3092701866155
17 18169057652502
18 106746028836790
19 627171773700111
20 3684942718387344

List of values

[10, 100, 450, 2205, 11970, 66946, 383845, 2221688, 12947130, 75691595, 443447550, 2600917830, 15265923595, 89639239300, 526483671750, 3092701866155, 18169057652502, 106746028836790, 627171773700111, 3684942718387344]

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

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