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.

A207948 Number of nX7 0..1 arrays avoiding 0 0 1 and 0 1 1 horizontally and 0 1 0 and 1 0 1 vertically.

Table of values

n a(n)
1 20
2 400
3 2340
4 18330
5 133812
6 1007146
7 7513176
8 56114310
9 418757982
10 3126019338
11 23335656728
12 174203347410
13 1300429210274
14 9707701033916
15 72467964696512
16 540973578440920
17 4038369684995910
18 30146442775842786
19 225043284353552098

List of values

[20, 400, 2340, 18330, 133812, 1007146, 7513176, 56114310, 418757982, 3126019338, 23335656728, 174203347410, 1300429210274, 9707701033916, 72467964696512, 540973578440920, 4038369684995910, 30146442775842786, 225043284353552098]

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

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