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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.

A222203 Number of ways to cover the n X n+1 grid graph by vertex disjoint cycles.

Table of values

n a(n)
2 1
3 3
4 54
5 1140
6 99051
7 13049563
8 6044482889
9 4738211572702
10 11986520595161863
11 54755153078468134960
12 764291947227525464744293
13 20119942924108379011391597989
14 1558052539448513320447263528275071
15 234788223520702255614480389250160811898
16 101199388044301804167035198499446336399419451
17 86918369741985767628242106496018767545685968221295

List of values

[1, 3, 54, 1140, 99051, 13049563, 6044482889, 4738211572702, 11986520595161863, 54755153078468134960, 764291947227525464744293, 20119942924108379011391597989, 1558052539448513320447263528275071, 234788223520702255614480389250160811898, 101199388044301804167035198499446336399419451, 86918369741985767628242106496018767545685968221295]

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

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