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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.

A320575 a(n) gives the number of configurations of n non-attacking rooks on an n X n chessboard such that the number of distinct distances between the rooks is given by A319476(n).

Table of values

n a(n)
1 1
2 2
3 6
4 2
5 2
6 28
7 2
8 4
9 2
10 8
11 4
12 2
13 2
14 4

List of values

[1, 2, 6, 2, 2, 28, 2, 4, 2, 8, 4, 2, 2, 4]

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

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