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.

A223969 Number of n X n 0..2 arrays with rows and antidiagonals unimodal.

Table of values

n a(n)
1 3
2 81
3 9515
4 2558848
5 1140963027
6 715985189481
7 574360426081996
8 553932588795530549
9 616038706732274614176
10 766990732794703992309550
11 1046181711135056928867576316
12 1538264672813438079567996935803

List of values

[3, 81, 9515, 2558848, 1140963027, 715985189481, 574360426081996, 553932588795530549, 616038706732274614176, 766990732794703992309550, 1046181711135056928867576316, 1538264672813438079567996935803]

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

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