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.

A208559 Number of 7 X n 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 0 1 and 0 1 1 vertically.

Table of values

n a(n)
1 20
2 400
3 1260
4 11020
5 52000
6 351140
7 1913940
8 11836400
9 67894220
10 407225740
11 2378376000
12 14112662980
13 82952260180
14 490344818000
15 2888730695340
16 17052623706380
17 100542287612000
18 593228737061860
19 3498693917381460

List of values

[20, 400, 1260, 11020, 52000, 351140, 1913940, 11836400, 67894220, 407225740, 2378376000, 14112662980, 82952260180, 490344818000, 2888730695340, 17052623706380, 100542287612000, 593228737061860, 3498693917381460]

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

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