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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.

A268030 Number of 6Xn 0..2 arrays with every repeated value in every row greater than or equal to, and in every column greater than, the previous repeated value.

Table of values

n a(n)
1 394
2 155236
3 61162984
4 19177213020
5 5458407864352
6 1411837587469431
7 339437646632621026
8 76740959189961339827
9 16475994752433970120239

List of values

[394, 155236, 61162984, 19177213020, 5458407864352, 1411837587469431, 339437646632621026, 76740959189961339827, 16475994752433970120239]

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

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