The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A220865

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A220865

Number of perfect matchings in the graph Petersen X P_n.
(history; published version)

#13 by Bruno Berselli at Mon Nov 16 04:25:16 EST 2015

STATUS

reviewed

approved

#12 by Joerg Arndt at Mon Nov 16 03:54:46 EST 2015

STATUS

proposed

reviewed

#11 by Michel Marcus at Mon Nov 16 00:48:59 EST 2015

STATUS

editing

proposed

#10 by Michel Marcus at Mon Nov 16 00:48:55 EST 2015

LINKS

S. Butler and S. Osborne, <a href="http://orion.math.iastate.edu/butler/papers/walk_tiling14_02_walks.pdf">Counting tilings by taking walks</a>, 2012.

STATUS

proposed

editing

#9 by Michel Marcus at Mon Nov 16 00:47:03 EST 2015

STATUS

editing

proposed

#8 by Michel Marcus at Mon Nov 16 00:46:57 EST 2015

REFERENCES

S. Butler and S. Osborne, Counting tilings by taking walks, http://orion.math.iastate.edu/butler/papers/walk_tiling.pdf, 2012.

LINKS

S. Butler and S. Osborne, <a href="http://orion.math.iastate.edu/butler/papers/walk_tiling.pdf">Counting tilings by taking walks</a>, 2012.

STATUS

proposed

editing

#7 by Andrew Howroyd at Sun Nov 15 17:45:49 EST 2015

STATUS

editing

proposed

#6 by Andrew Howroyd at Sun Nov 15 17:43:51 EST 2015

LINKS

Andrew Howroyd, <a href="/A220865/b220865.txt">Table of n, a(n) for n = 1..30</a>

Discussion

Sun Nov 15

17:45

Andrew Howroyd: This should be a linear recurrence.
Butler reference now at http://orion.math.iastate.edu/butler/papers/14_02_walks.pdf

#5 by Andrew Howroyd at Sun Nov 15 17:35:02 EST 2015

DATA

6, 472, 14508, 616945, 23310528, 919890493, 35726458296, 1395733639864, 54409227545670, 2122708670082349, 82790398883086464, 3229363021350300853, 125961061338940140882, 4913174522492216122360, 191639794681507592618832, 7474980745741030831444357, 291564159140628690376670784, 11372562031468273218156678121, 443590715863319911428764167260, 17302409958226333533759796319896

EXTENSIONS

a(8)-a(20) from Andrew Howroyd, Nov 15 2015

STATUS

approved

editing

#4 by N. J. A. Sloane at Thu Dec 27 18:01:37 EST 2012

STATUS

editing

approved