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Search: id:A060787
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| 0, 18, 108, 270, 504, 810, 1188, 1638, 2160, 2754, 3420, 4158, 4968, 5850, 6804, 7830, 8928, 10098, 11340, 12654, 14040, 15498, 17028, 18630, 20304, 22050, 23868, 25758, 27720, 29754, 31860, 34038, 36288, 38610, 41004, 43470, 46008
(list; graph; listen)
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OFFSET
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2,2
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COMMENT
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Except for first term Engel expansion of cosh(1/3); cf. A006784 for Engel expansion definition - Benoit Cloitre (benoit7848c(AT)orange.fr), Mar 03 2002
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REFERENCES
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L. Berzolari, Allgemeine Theorie der Ho"heren Ebenen Algebraischen Kurven, Encyclopa"die der Mathematischen Wissenschaften mit Einschluss ihrer Anwendungen. Band III_2. Heft 3, Leipzig: B.G. Teubner, 1906. p. 341.
H. Brocard and T. Lemoyne: Courbes geometriques remarquables (courbes speciales) Planes et Gauches. Tome I, Paris: Albert Blanchard, 1967 [First publ. 1919]; see p. 135.
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LINKS
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Harry J. Smith, Table of n, a(n) for n=2,...,1000
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PROGRAM
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(PARI) { for (n=2, 1000, write("b060787.txt", n, " ", 18*(n - 2)*(2*n - 5)); ) } [From Harry J. Smith (hjsmithh(AT)sbcglobal.net), Jul 11 2009]
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CROSSREFS
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Sequence in context: A123595 A002165 A008654 this_sequence A019584 A041622 A125328
Adjacent sequences: A060784 A060785 A060786 this_sequence A060788 A060789 A060790
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KEYWORD
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nonn
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AUTHOR
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Antreas P. Hatzipolakis (xpolakis(AT)otenet.gr), Apr 28 2001
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