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.

A281609 Number of 6Xn 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)
1 122
2 9188
3 95623
4 2563481
5 69506779
6 1732267694
7 44428349137
8 1138837839480
9 29102840547371
10 744335104686091
11 19034344218360000
12 486715748229292254
13 12445950255418792107
14 318255588377585182015
15 8138127052120466124265

List of values

[122, 9188, 95623, 2563481, 69506779, 1732267694, 44428349137, 1138837839480, 29102840547371, 744335104686091, 19034344218360000, 486715748229292254, 12445950255418792107, 318255588377585182015, 8138127052120466124265]

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

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