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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.

A219464 Number of n X n arrays of the minimum value of corresponding elements and their horizontal or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and columns, 0..3 n X n array.

Table of values

n a(n)
1 4
2 23
3 673
4 87083
5 43792361
6 86755752059
7 664221777830589

List of values

[4, 23, 673, 87083, 43792361, 86755752059, 664221777830589]

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

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