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Search: id:A143744
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| A143744 |
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The number of steps needed to generate the next largest juggler number. |
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+0
1
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| 0, 0, 3, 2, 3, 8, 9, 17, 47, 32, 54, 25, 43, 39, 60, 148, 99, 89, 67
(list; graph; listen)
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OFFSET
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1,3
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COMMENT
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The juggler sequence: begin with a starting value x and if x is even, x <- [sqrt(x)] and if x is odd, x <- [sqrt(x^3)] and repeat until x = 1, save the starting value, max x and the number of steps needed to reach it.
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REFERENCES
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C. Pickover, Computers and the Imagination, St. Martin's Press, NY, 1991, p. 233.
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LINKS
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Eric Weisstein's World of Mathematics, Juggler Sequence
H. J. Smith, Juggler Sequence
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EXAMPLE
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8 is in the sequence because starting at 37 the juggler sequences maxes out at 24906114455136, a 14 digit number, after 8 steps. This is the largest juggler number found for starting values less than or equal to 37.
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CROSSREFS
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Cf. A007320, A094670, A094679, A094683, A094684, A095908.
Adjacent sequences: A143741 A143742 A143743 this_sequence A143745 A143746 A143747
Sequence in context: A016602 A131134 A151690 this_sequence A095243 A049921 A022460
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KEYWORD
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nonn
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AUTHOR
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Harry J. Smith (hjsmithh(AT)sbcglobal.net), Oct 08 2008
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