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A028464
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Number of perfect matchings in graph C_{3} X C_{3} X P_{2n}.
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0
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1120, 2861029, 7537209013, 19875272280736, 52411725012875905, 138211512392292291937, 364468498187098321751584, 961115930137025304064194421, 2534495671871264129163903449317, 6683552014192354263830206528781536
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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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.
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LINKS
| Per Hakan Lundow, Enumeration of matchings in polygraphs, 1998.
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CROSSREFS
| Sequence in context: A171004 A032777 A032779 * A122052 A207234 A207227
Adjacent sequences: A028461 A028462 A028463 * A028465 A028466 A028467
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KEYWORD
| nonn
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AUTHOR
| Per Hakan Lundow (phl(AT)theophys.kth.se)
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