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.

A196449 Number of n X n 0..4 arrays with each element x equal to the number of its horizontal and vertical neighbors equal to 3,0,2,4,1 for x=0,1,2,3,4.

Table of values

n a(n)
1 1
2 6
3 40
4 594
5 27320
6 3707781
7 926499600
8 539621963877
9 739769209147928

List of values

[1, 6, 40, 594, 27320, 3707781, 926499600, 539621963877, 739769209147928]

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

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