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Search: id:A028354
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| A028354 |
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How the astronomical clock ("Orloj") in Prague strikes the hours (digits follow 12343212343... (A028356), n-th group adds to n). |
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+0
5
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| 1, 2, 3, 4, 32, 123, 43, 2123, 432, 1234, 32123, 43212, 34321, 23432, 123432, 1234321, 2343212, 3432123, 4321234, 32123432, 123432123, 43212343, 2123432123, 432123432, 1, 2, 3, 4, 32, 123, 43, 2123, 432, 1234, 32123, 43212
(list; graph; listen)
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OFFSET
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1,2
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COMMENT
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There is a single bell, which to indicate 5 o'clock, say, strikes thrice then twice.
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REFERENCES
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Zden\v{e}k Horsk\'{y}, "Pra\v{z}sk\'{y} Orloj" ["The Astronomical Clock of Prague", in Czech], Panorama, Prague, 1988, pp. 76-78.
M. Krizek, A. Solcova and L. Somer, Construction of Sindel sequences, Comment. Math. Univ. Carolin 48 (2007), to appear.
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LINKS
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N. J. A. Sloane, My favorite integer sequences, in Sequences and their Applications (Proceedings of SETA '98).
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CROSSREFS
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Cf. A028355, A028356, A068962.
Sequence in context: A004844 A037324 A067242 this_sequence A028355 A074920 A102842
Adjacent sequences: A028351 A028352 A028353 this_sequence A028355 A028356 A028357
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KEYWORD
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nonn,nice
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AUTHOR
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John Conway (conway(AT)math.Princeton.EDU)
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