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Search: id:A070885
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| A070885 |
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a(n) = (3/2)a(n-1) if a(n-1) is even; (3/2)(a(n-1)+1) is a(n-1) is odd. |
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3
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| 1, 3, 6, 9, 15, 24, 36, 54, 81, 123, 186, 279, 420, 630, 945, 1419, 2130, 3195, 4794, 7191, 10788, 16182, 24273, 36411, 54618, 81927, 122892, 184338, 276507, 414762, 622143, 933216, 1399824, 2099736, 3149604, 4724406, 7086609, 10629915
(list; graph; listen)
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OFFSET
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1,2
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REFERENCES
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Wolfram, S. A New Kind of Science. Champaign, IL: Wolfram Media, 2002, p. 123.
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LINKS
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Eric Weisstein's World of Mathematics, Wolfram Sequences
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FORMULA
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For n>1, a(n) = 3*A061419(n) = 3*[K*(3/2)^n] where K=1.08151366859... - Benoit Cloitre (benoit7848c(AT)orange.fr), Aug 18 2002
a(n)=3*ceiling(a(n-1)/2). - Benoit Cloitre (benoit7848c(AT)orange.fr), Apr 25 2003
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CROSSREFS
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The constant K is 2/3*K(3) (see A083286). - Ralf Stephan, May 29, 2003
Cf. A003312.
Adjacent sequences: A070882 A070883 A070884 this_sequence A070886 A070887 A070888
Sequence in context: A007187 A082004 A112773 this_sequence A002597 A057855 A070120
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KEYWORD
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nonn
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AUTHOR
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Eric Weisstein (eric(AT)weisstein.com), May 14 2002
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