cp's OEIS Frontend

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.

A220028 Number of n X n arrays of the minimum value of corresponding elements and their horizontal or diagonal 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 4
3 10
4 34
5 111
6 358
7 1165
8 3789
9 12375
10 40583
11 133632
12 441773

List of values

[2, 4, 10, 34, 111, 358, 1165, 3789, 12375, 40583, 133632, 441773]

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

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