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A028449
Number of perfect matchings in graph P_{2} X P_{5} X P_{n}.
2
1, 8, 450, 14320, 535229, 19114420, 692276437, 24972353440, 901990734650, 32567565264292, 1176040842289105, 42466317504553328, 1533458728878759825, 55373015618048484484, 1999515562849410856778, 72202339448101503740768, 2607220750517054436937621
OFFSET
0,2
REFERENCES
Per Hakan Lundow, "Computation of matching polynomials and the number of 1-factors in polygraphs", Research report, No 12, 1996, Department of Math., Umea University, Sweden.
LINKS
Alois P. Heinz, G.f. for A028449
FORMULA
G.f.: see link above.
CROSSREFS
Column k=5 of A181206.
Sequence in context: A013457 A012740 A042525 * A209840 A187049 A367707
KEYWORD
nonn
AUTHOR
STATUS
approved