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.

A250574 T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with nondecreasing maximum of every three consecutive values in every row and column.

Table of values

n a(n)
1 512
2 3375
3 3375
4 21952
5 39852
6 21952
7 140608
8 463006
9 463006
10 140608
11 884736
12 5281190
13 9583440
14 5281190
15 884736
16 5545233
17 59025322
18 194160522
19 194160522
20 59025322
21 5545233
22 34645976
23 656805747
24 3844025984
25 6967413024
26 3844025984

List of values

[512, 3375, 3375, 21952, 39852, 21952, 140608, 463006, 463006, 140608, 884736, 5281190, 9583440, 5281190, 884736, 5545233, 59025322, 194160522, 194160522, 59025322, 5545233, 34645976, 656805747, 3844025984, 6967413024, 3844025984]

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

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