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.

A202881 Number of n X n 0..2 arrays with every nonzero element less than or equal to some horizontal or vertical neighbor.

Table of values

n a(n)
1 1
2 35
3 5493
4 6092872
5 56006562037
6 4095290003129296
7 2365289879500027706428
8 10827985400073310953152590562
9 392915439811314078675718437985175633
10 112991429416970014192131075985467073204579858

List of values

[1, 35, 5493, 6092872, 56006562037, 4095290003129296, 2365289879500027706428, 10827985400073310953152590562, 392915439811314078675718437985175633, 112991429416970014192131075985467073204579858]

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

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