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.

A209096 Number of n X 4 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 or right-upward antidiagonal neighbors.

Table of values

n a(n)
1 14
2 520
3 20928
4 849548
5 34538488
6 1404480904
7 57113932788
8 2322577420320
9 94449268074144
10 3840847202693708
11 156190807044264984
12 6351611234890358120
13 258292828185791666996
14 10503663185141042925120
15 427138999879594132134016

List of values

[14, 520, 20928, 849548, 34538488, 1404480904, 57113932788, 2322577420320, 94449268074144, 3840847202693708, 156190807044264984, 6351611234890358120, 258292828185791666996, 10503663185141042925120, 427138999879594132134016]

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

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