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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.

A219679 Number of n X n arrays of the minimum value of corresponding elements and their horizontal, vertical or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..2 n X n array.

Table of values

n a(n)
1 3
2 4
3 31
4 427
5 8964
6 344926
7 35011623
8 10451333258

List of values

[3, 4, 31, 427, 8964, 344926, 35011623, 10451333258]

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

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