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.

A195897 Number of ways to place a queen, a rook, a bishop, a knight and a king on an n X n chessboard such that each piece attacks the same number of unoccupied spaces.

Table of values

n a(n)
4 28
5 39
6 90
7 63
8 64
9 197
10 15
11 7
12 5
13 1

List of values

[28, 39, 90, 63, 64, 197, 15, 7, 5, 1]