A070768 - OEIS

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A070768

Number of polyhexes with n cells without holes that do not tile the plane.

0, 0, 0, 0, 0, 4, 37, 381, 2717, 18760, 116439, 565943, 3033697, 14835067, 72633658, 356923880, 1746833634, 8532601529, 41868336466, 205618704167, 1012359995953

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OFFSET

1,6

REFERENCES

M. Gardner, Tiling with Polyominoes, Polyiamonds and Polyhexes. Chap. 14 in Time Travel and Other Mathematical Bewilderments. New York: W. H. Freeman, pp. 175-187, 1988.

LINKS

Table of n, a(n) for n=1..21.

Craig S. Kaplan, Heesch Numbers of Unmarked Polyforms

Craig S. Kaplan, Heesch Numbers of Unmarked Polyforms, arXiv:2105.09438 [cs.CG], 2021. See Table 3 and Table 4.

Joseph Myers, Polyhex tiling

CROSSREFS

Cf. A018190, A070766, A070767, A038144, A054361, A071334.

Sequence in context: A371753 A326014 A220914 * A221630 A235135 A316877

Adjacent sequences: A070765 A070766 A070767 * A070769 A070770 A070771

KEYWORD

nonn,hard,more

AUTHOR

Joseph Myers, May 05 2002

EXTENSIONS

More terms from Joseph Myers, Nov 06 2003

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

STATUS

approved