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.

A250952 Number of (n+1) X (4+1) 0..1 arrays with no 2 X 2 subblock having its maximum diagonal element less than its minimum antidiagonal element.

Table of values

n a(n)
1 780
2 19208
3 472712
4 11633448
5 286298344
6 7045780240
7 173396103624
8 4267264603784
9 105017049454880
10 2584461405506568
11 63603393841083832
12 1565274567258578128
13 38521285153870175304
14 948005826546231120680

List of values

[780, 19208, 472712, 11633448, 286298344, 7045780240, 173396103624, 4267264603784, 105017049454880, 2584461405506568, 63603393841083832, 1565274567258578128, 38521285153870175304, 948005826546231120680]

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

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