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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.

A201026 Number of n X n 0..4 arrays with every row and column running average nondecreasing rightwards and downwards, and the number of instances of each value within one of each other.

Table of values

n a(n)
1 5
2 10
3 296
4 30157
5 2579473
6 21586894705

List of values

[5, 10, 296, 30157, 2579473, 21586894705]

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

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