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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.

A219497 Number of n X n arrays of the minimum value of corresponding elements and their horizontal or vertical neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..1 n X n array.

Table of values

n a(n)
1 2
2 3
3 11
4 35
5 107
6 325
7 995
8 3083
9 9663
10 30581
11 97541

List of values

[2, 3, 11, 35, 107, 325, 995, 3083, 9663, 30581, 97541]

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

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