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.

A081161 Number of even cycles in range [A014137(2n)..A014138(2n)] of permutation A057505/A057506, with two fixed-points of A057164.

Table of values

n a(n)
0 0
1 1
2 4
3 16
4 60
5 225
6 848
7 3188
8 12095

List of values

[0, 1, 4, 16, 60, 225, 848, 3188, 12095]

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

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