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A033521 Number of matchings in graph C_{9} X P_{n}. 1
1, 76, 36626, 13775700, 5392866995, 2099687534810, 818177759586592, 318778982954630760, 124205035822005824254, 48393567952045732290238, 18855421270525299234217319, 7346573263558160357598269172, 2862420221714879808794571247043 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

REFERENCES

Per Hakan Lundow, "Computation of matching polynomials and the number of 1-factors in polygraphs", Research reports, No 12, 1996, Department of Mathematics, Umea University.

LINKS

Alois P. Heinz, Table of n, a(n) for n = 0..200

Per Hakan Lundow, Enumeration of matchings in polygraphs, 1998.

CROSSREFS

Row 9 of A287428.

Sequence in context: A111682 A271242 A241878 * A222739 A060716 A116255

Adjacent sequences:  A033518 A033519 A033520 * A033522 A033523 A033524

KEYWORD

nonn

AUTHOR

Per H. Lundow

STATUS

approved

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Last modified November 30 02:42 EST 2020. Contains 338781 sequences. (Running on oeis4.)