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A028467
Number of perfect matchings in graph C_{4} X C_{4} X P_{n}.
0
1, 272, 589185, 930336768, 1545853411969, 2551276235535120, 4215052025641922305, 6962828841161217269760, 11502121570585083415761153, 19000667589592082076903397136, 31387734017421172152812450818177, 51850272028503475884947837964718080
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.
CROSSREFS
Sequence in context: A225833 A198289 A198595 * A203758 A028679 A043596
KEYWORD
nonn
AUTHOR
EXTENSIONS
a(10)-a(11) from Alois P. Heinz, Dec 10 2013
STATUS
approved