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.

A209041 Number of n X 2 0..3 arrays with no element equal the average of immediate neighbors vertically above and horizontally left of it.

Table of values

n a(n)
1 12
2 124
3 1300
4 13644
5 143212
6 1503212
7 15778340
8 165616044
9 1738375148
10 18246711388
11 191525101396
12 2010327432972
13 21101236121548
14 221487384867980
15 2324824070641124
16 24402324144347820
17 256136983080016460

List of values

[12, 124, 1300, 13644, 143212, 1503212, 15778340, 165616044, 1738375148, 18246711388, 191525101396, 2010327432972, 21101236121548, 221487384867980, 2324824070641124, 24402324144347820, 256136983080016460]

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

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