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.

Showing 1-3 of 3 results.

A286422 Number of matchings in the n X n black bishop graph.

Original entry on oeis.org

2, 12, 130, 9492, 1166928, 1431128744, 2907639077764, 76670800431934272, 3341096345926174809912, 2311650738313947870105792416, 2645105778378736719464340469683304, 56641723029988800376624313271476598959936
Offset: 2

Views

Author

Andrew Howroyd, May 08 2017

Keywords

Comments

Matchings are not necessarily perfect matchings.
C# software that can be used to compute this sequence can be found in A270228.

Links

Crossrefs

Cf. A286423, A287248, A270228, A216078 (independent vertex sets), A234603 (cycles).

A286423 Number of matchings in the n X n white bishop graph.

Original entry on oeis.org

2, 7, 130, 4207, 1166928, 541240697, 2907639077764, 25886034363696809, 3341096345926174809912, 713738790204487208874991935, 2645105778378736719464340469683304, 16238808907214611705432043192158547965751
Offset: 2

Views

Author

Andrew Howroyd, May 08 2017

Keywords

Comments

Matchings are not necessarily perfect matchings.
C# software that can be used to compute this sequence can be found in A270228.

Links

Crossrefs

Cf. A286422, A287248, A270228, A216332 (independent vertex sets), A234630 (cycles).

A297471 Number of maximal matchings in the n X n bishop graph.

Original entry on oeis.org

1, 1, 10, 900, 647520, 4779786496, 478835488935936, 751143210488064000000, 21219054324352295044090429440, 12058466910590476741745310502905446400, 152894149853918130236030979823862137011289718784, 47493814580095591414083394894826323264052517057498653392896
Offset: 1

Views

Author

Eric W. Weisstein, Dec 30 2017

Keywords

Links

Crossrefs

Cf. A287248, A297472, A297490.

Formula

a(n) = A297472(n) * A297490(n). - Andrew Howroyd, Dec 30 2017

Extensions

a(6)-a(12) from Andrew Howroyd, Dec 30 2017
Showing 1-3 of 3 results.

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

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