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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.

A268247 Number of 3Xn 0..n arrays with every repeated value in every row greater than or equal to, and every column greater than, the previous repeated value.

Table of values

n a(n)
1 6
2 576
3 216000
4 197555340
5 371713931400
6 1257212773492866
7 6967515866907769668
8 59102884914387317492904
9 728462977173724674571341120
10 12523133152298313854607312469836

List of values

[6, 576, 216000, 197555340, 371713931400, 1257212773492866, 6967515866907769668, 59102884914387317492904, 728462977173724674571341120, 12523133152298313854607312469836]

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

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