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.

A197316 Number of nX7 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 0,1,1,0,0 for x=0,1,2,3,4.

Table of values

n a(n)
1 2
2 27
3 249
4 2724
5 24903
6 189212
7 2241018
8 20425821
9 208960627
10 1984221109
11 20223402011
12 195734767851
13 1964217477394
14 19163046359315
15 191509608470344
16 1875354477655910
17 18682249962661264
18 183413216662448071

List of values

[2, 27, 249, 2724, 24903, 189212, 2241018, 20425821, 208960627, 1984221109, 20223402011, 195734767851, 1964217477394, 19163046359315, 191509608470344, 1875354477655910, 18682249962661264, 183413216662448071]

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

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