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.

A219467 Number of nX4 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 nX4 array.

Table of values

n a(n)
1 20
2 211
3 4838
4 87083
5 1306891
6 17399442
7 208345624
8 2285009931
9 23253970439
10 221258732227
11 1979908560027
12 16752069750566
13 134676183213583
14 1033204910207865
15 7592661274649504
16 53621665489883610
17 364978798507011324

List of values

[20, 211, 4838, 87083, 1306891, 17399442, 208345624, 2285009931, 23253970439, 221258732227, 1979908560027, 16752069750566, 134676183213583, 1033204910207865, 7592661274649504, 53621665489883610, 364978798507011324]

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

Content is available under The OEIS End-User License Agreement.