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.

A212270 Number of ways to place k non-attacking wazirs on an n x n cylindrical chessboard, summed over all k >= 0.

Table of values

n a(n)
1 2
2 7
3 43
4 933
5 36211
6 3557711
7 746156517
8 363549830913
9 394677987525997
10 974602314570939359
11 5418730454986467701985
12 68176187476467835406646029
13 1936241516342334422813929891295
14 124281423643836238320564876791634465
15 18018270577720149773239661332878801006033

List of values

[2, 7, 43, 933, 36211, 3557711, 746156517, 363549830913, 394677987525997, 974602314570939359, 5418730454986467701985, 68176187476467835406646029, 1936241516342334422813929891295, 124281423643836238320564876791634465, 18018270577720149773239661332878801006033]

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

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