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.

A206694 Number of n X 2 0..2 arrays avoiding the pattern z-2 z-1 z in any row or column.

Table of values

n a(n)
1 9
2 81
3 676
4 5625
5 46656
6 386884
7 3207681
8 26594649
9 220492801
10 1828075536
11 15156318321
12 125658906256
13 1041820324416
14 8637585806529
15 71613009227809
16 593733388556025
17 4922560027477764
18 40812252925262329
19 338368649551172496

List of values

[9, 81, 676, 5625, 46656, 386884, 3207681, 26594649, 220492801, 1828075536, 15156318321, 125658906256, 1041820324416, 8637585806529, 71613009227809, 593733388556025, 4922560027477764, 40812252925262329, 338368649551172496]

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

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