

A287227


Number of independent vertex sets and vertex covers in the n X n queen graph.


2



1, 2, 5, 18, 87, 462, 2635, 16870, 118969, 915442, 7535369, 66807234, 633443407, 6354135838, 67480769839, 754734433310, 8870886701401
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OFFSET

0,2


LINKS



CROSSREFS



KEYWORD

nonn,more


AUTHOR



EXTENSIONS



STATUS

approved



