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.

A208839 Number of nX7 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 1 1 and 1 1 0 vertically.

Table of values

n a(n)
1 42
2 1764
3 7086
4 31419
5 169974
6 992574
7 6206445
8 40122936
9 265568130
10 1780946115
11 12045557394
12 81883111842
13 558396389421
14 3815311552572
15 26099962612902
16 178677791790795
17 1223770846004094
18 8384018150245206
19 57448693695345549

List of values

[42, 1764, 7086, 31419, 169974, 992574, 6206445, 40122936, 265568130, 1780946115, 12045557394, 81883111842, 558396389421, 3815311552572, 26099962612902, 178677791790795, 1223770846004094, 8384018150245206, 57448693695345549]

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

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