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Search: id:A085839
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| A085839 |
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a(0)=1, a(1)=3, a(n)=floor[(pi+1/pi)*a(n-1)-a(n-2)]. |
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4
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| 1, 3, 9, 28, 87, 273, 857, 2692, 8457, 26568, 83465, 262212, 823762, 2587924, 8130202, 25541782, 80241874, 252087281, 791955549, 2488001734, 7816287969, 24555592861, 77143670136, 242353987370, 761377506289, 2391937980365
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OFFSET
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0,2
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COMMENT
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a(n+1)/a(n) converges to pi.
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MATHEMATICA
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a[n_] := a[n] = Floor[(Pi + 1/Pi)a[n - 1] - a[n - 2]]; Table[a[n], {n, 0, 25}] (Robert G. Wilson v)
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CROSSREFS
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Cf. A085421, A085422.
Sequence in context: A052541 A024738 A052939 this_sequence A134915 A115239 A118365
Adjacent sequences: A085836 A085837 A085838 this_sequence A085840 A085841 A085842
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KEYWORD
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nonn
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AUTHOR
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Gary W. Adamson (qntmpkt(AT)yahoo.com), Jul 05 2003
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EXTENSIONS
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Edited by Don Reble (djr(AT)nk.ca), Nov 14 2005
Definition corrected by Robert G. Wilson v, Apr 26 2006.
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