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A103909
Coordination sequence for octagonal tiling is a(n) + A103908(n)*sqrt(2).
1
4, 32, -8, 24, 40, 40, -176, 444, 240, -648, 232, 508, -272, -556, 1540, 980, -3064, 1424, 812, 740, -3284, 2172, 4164, -8648, 6836, 3164, -7972, 1500, 4716, 792, -10216, 10500, 7236, -18132, 5356, 7328, 2800, -19444, 12416, 21932
OFFSET
1,1
LINKS
M. Baake, U. Grimm, P. Repetowicz and D. Joseph, Coordination sequences and critical points, arXiv:cond-mat/9809110 [cond-mat.stat-mech], 1998; in: S. Takeuchi and T. Fujiwara, Proceedings of the 6th International Conference on Quasicrystals - Yamada Conference XLVII, World Scientific Publishing, 1998, ISBN 981-02-3343-4, pp 124-127.
M. Baake and U. Grimm, Averaged coordination numbers of planar aperiodic tilings, arXiv:math-ph/0509038, 2005; Philosophical Magazine 86 (2006) 567-572.
CROSSREFS
Cf. A103908.
Sequence in context: A084764 A376747 A061789 * A309906 A196247 A196250
KEYWORD
sign
AUTHOR
Ralf Stephan, Feb 22 2005
EXTENSIONS
More terms from Herman Jamke (hermanjamke(AT)fastmail.fm), Nov 03 2006
Typo in name corrected by Michel Marcus, Jun 08 2015
STATUS
approved