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.

A182562 Number of ways to place k non-attacking semi-knights on an n x n chessboard, sum over all k>=0.

Table of values

n a(n)
1 2
2 16
3 288
4 11664
5 1458000
6 506250000
7 414720000000
8 869730877440000
9 5045702916833280000
10 77297454895962562560000
11 3017525202366485003182080000
12 307389127582207654481154908160000
13 83016370640108703579427655610531840000
14 58770343311359208383258439665073059266560000

List of values

[2, 16, 288, 11664, 1458000, 506250000, 414720000000, 869730877440000, 5045702916833280000, 77297454895962562560000, 3017525202366485003182080000, 307389127582207654481154908160000, 83016370640108703579427655610531840000, 58770343311359208383258439665073059266560000]

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

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