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.

A132595 Number of ways to move a chess queen from the lower left corner to square (n,n), with the queen moving only up, right, or diagonally up-right.

Table of values

n a(n)
1 1
2 3
3 22
4 188
5 1712
6 16098
7 154352
8 1499858
9 14717692
10 145509218
11 1447187732
12 14462966928
13 145120265472
14 1461040916988
15 14751839744412
16 149316973768398
17 1514654852648052
18 15393833895932658
19 156716528008129892
20 1597861126366223768

List of values

[1, 3, 22, 188, 1712, 16098, 154352, 1499858, 14717692, 145509218, 1447187732, 14462966928, 145120265472, 1461040916988, 14751839744412, 149316973768398, 1514654852648052, 15393833895932658, 156716528008129892, 1597861126366223768]

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

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