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.

A281607 Number of 4Xn 0..2 arrays with no element equal to more than one of its horizontal, diagonal or antidiagonal neighbors and with new values introduced in order 0 sequentially upwards.

Table of values

n a(n)
1 14
2 285
3 1623
4 16198
5 167545
6 1626073
7 15975093
8 157271995
9 1545421328
10 15189232151
11 149300998270
12 1467524054601
13 14424777071936
14 141785299554627
15 1393649553888429
16 13698600339828853
17 134647609111781265

List of values

[14, 285, 1623, 16198, 167545, 1626073, 15975093, 157271995, 1545421328, 15189232151, 149300998270, 1467524054601, 14424777071936, 141785299554627, 1393649553888429, 13698600339828853, 134647609111781265]

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

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