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.

A208252 Number of n X n 0..2 arrays with new values 0..2 introduced in row major order and no element equal to more than one of its immediate leftward or upward neighbors.

Table of values

n a(n)
1 1
2 12
3 2040
4 2445264
5 20662697664
6 1230875651548608
7 516901401841519506624
8 1530268623239822606574667872
9 31936997040921403605588139690977984
10 4698799611233642481043318409392291549604736

List of values

[1, 12, 2040, 2445264, 20662697664, 1230875651548608, 516901401841519506624, 1530268623239822606574667872, 31936997040921403605588139690977984, 4698799611233642481043318409392291549604736]

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

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