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A256982
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Number of benzenoid graphs with n hexagonal faces and forcing number 1.
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0
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1, 1, 2, 6, 15, 51, 190, 767, 3256, 14420, 65298, 301920, 1416398, 6730574, 32315128
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OFFSET
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1,3
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LINKS
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Table of n, a(n) for n=1..15.
C. E. Larson and N. Van Cleemput, Forcing Independence, Croatica Chemica Acta, Vol. 86, No. 4, Dec. 2013, 469-475.
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CROSSREFS
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Sequence in context: A196961 A255540 A323926 * A047870 A027287 A192186
Adjacent sequences: A256979 A256980 A256981 * A256983 A256984 A256985
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KEYWORD
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nonn,more
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AUTHOR
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N. J. A. Sloane, Apr 24 2015
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STATUS
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approved
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