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.

A207844 Number of nX7 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 0 0 and 1 1 1 vertically.

Table of values

n a(n)
1 42
2 1764
3 2520
4 21600
5 140032
6 794768
7 5346600
8 35345040
9 217844880
10 1406403632
11 9173045376
12 58174755912
13 372634101736
14 2407973848320
15 15409799757744
16 98700041311176
17 634975561066176
18 4073542031777904
19 26114933024294400

List of values

[42, 1764, 2520, 21600, 140032, 794768, 5346600, 35345040, 217844880, 1406403632, 9173045376, 58174755912, 372634101736, 2407973848320, 15409799757744, 98700041311176, 634975561066176, 4073542031777904, 26114933024294400]

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

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