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.

A302803 Number of nX3 0..1 arrays with every element equal to 0, 1, 2, 3 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

Table of values

n a(n)
1 4
2 29
3 169
4 1010
5 6084
6 36456
7 218640
8 1312416
9 7873344
10 47237760
11 283440384
12 1700614656
13 10203632640
14 61222127616
15 367332102144
16 2203991285760
17 13223955677184
18 79343718137856
19 476062276976640
20 2856373852962816

List of values

[4, 29, 169, 1010, 6084, 36456, 218640, 1312416, 7873344, 47237760, 283440384, 1700614656, 10203632640, 61222127616, 367332102144, 2203991285760, 13223955677184, 79343718137856, 476062276976640, 2856373852962816]

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

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