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A075207 Number of polyhexes with n cells that tile the plane by translation. 10

%I

%S 1,1,3,6,12,36,60,209,387,1054,1468,6895,7001,23920,49496,126732,

%T 146046,638800,647502,2772935,4162861

%N Number of polyhexes with n cells that tile the plane by translation.

%D Branko Gr├╝nbaum and G. C. Shephard, Tilings and Patterns. W. H. Freeman, New York, 1987, Section 9.4.

%H Joseph Myers, <a href="http://www.polyomino.org.uk/mathematics/polyform-tiling/">Polyhex tiling</a>

%Y Cf. A070766, A075208, A075209, A075210, A075211, A075212, A075213, A075214, A075215, A075198, A075216.

%K hard,nonn

%O 1,3

%A _Joseph Myers_, Sep 08 2002

%E More terms from _Joseph Myers_, Nov 08 2003

%E More terms from Herman Jamke (hermanjamke(AT)fastmail.fm), May 05 2007

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Last modified November 16 19:17 EST 2019. Contains 329201 sequences. (Running on oeis4.)