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.

A202806 Number of n X n nonnegative integer arrays with each row and column increasing from zero by 0, 1 or 2.

Table of values

n a(n)
1 1
2 3
3 32
4 1177
5 146300
6 60758779
7 83834499040
8 383108603365234
9 5786835759666959842
10 288547665952004154207686
11 47452156644340908611972658594
12 25719338921489550833572201554228792

List of values

[1, 3, 32, 1177, 146300, 60758779, 83834499040, 383108603365234, 5786835759666959842, 288547665952004154207686, 47452156644340908611972658594, 25719338921489550833572201554228792]

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

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