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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.

A222202 Number of ways to cover the 2n X 2n grid graph by vertex disjoint cycles.

Table of values

n a(n)
1 1
2 18
3 13903
4 360783593
5 303872744726644
6 8217125138015950451626
7 7095967027221343377167292602835
8 195081705501438193439250404333039349462635
9 170400931523966165754313513175663906434875251822099185
10 4722705723996809689481769489662532396060449405036901391459114641198

List of values

[1, 18, 13903, 360783593, 303872744726644, 8217125138015950451626, 7095967027221343377167292602835, 195081705501438193439250404333039349462635, 170400931523966165754313513175663906434875251822099185, 4722705723996809689481769489662532396060449405036901391459114641198]

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

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