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A010917
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Pisot sequence E(5,21), a(n)=[ a(n-1)^2/a(n-2)+1/2 ].
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0
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5, 21, 88, 369, 1547, 6486, 27193, 114009, 477993, 2004029, 8402073, 35226452, 147690090, 619204077, 2596069167, 10884255079, 45633225081, 191321428631, 802132415328, 3363012791217, 14099735676764
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,1
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REFERENCES
| D. W. Boyd, Some integer sequences related to the Pisot sequences, Acta Arithmetica, 34 (1979), 295-305.
D. W. Boyd, Linear recurrence relations for some generalized Pisot sequences, Advances in Number Theory ( Kingston ON, 1991) 333-340, Oxford Sci. Publ., Oxford Univ. Press, New York, 1993.
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MATHEMATICA
| RecurrenceTable[{a[0]==5, a[1]==21, a[n]==Floor[a[n-1]^2/a[n-2]+1/2]}, a[n], {n, 30}] (* From Harvey P. Dale, Sep 24 2011 *)
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CROSSREFS
| Sequence in context: A039919 A010925 A019992 * A015448 A099843 A035011
Adjacent sequences: A010914 A010915 A010916 * A010918 A010919 A010920
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KEYWORD
| nonn
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AUTHOR
| Simon Plouffe (simon.plouffe(AT)gmail.com)
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