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Search: id:A032523
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| A032523 |
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Index of first occurrence of n as a term in A001203, the continued fraction for Pi. |
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+0
14
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| 4, 9, 1, 30, 40, 32, 2, 44, 130, 100, 276, 55, 28, 13, 3, 78, 647, 137, 140, 180, 214, 83, 203, 91, 791, 112, 574, 175, 243, 147, 878, 455, 531, 421, 1008, 594, 784, 3041, 721, 1872, 754, 119, 492, 429, 81, 3200, 825, 283, 3027, 465, 1437, 3384, 1547, 1864, 446
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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Until it is proved that every integer n>0 does occur in A001203, we should tacitly understand a convention like "A032523(n) = 0 if n does not occur in A001203". - M. F. Hasler, Mar 31 2008
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LINKS
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M. F. Hasler (using data from H. Havermann), Table of n, a(n) for n=1,...,3131.
H. Havermann, 3131 terms of a trivial variation (first term of pi excluded) of A032523
Eric Weisstein, Continued fraction of Pi
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FORMULA
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A032523(n) = min { k | A001203(k)=n }. - M. F. Hasler, Mar 31 2008
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PROGRAM
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(PARI) default( realprecision, 15000); v=contfrac(Pi); a(n) = for( i=1, #v, v[i]==n && return(i)) \\ - W. Meeussen, simplified by M. F. Hasler, Mar 31 2008
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CROSSREFS
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Cf. A001203, A107892, A138758, A138759.
Sequence in context: A070638 A129861 A055491 this_sequence A032760 A129970 A006830
Adjacent sequences: A032520 A032521 A032522 this_sequence A032524 A032525 A032526
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KEYWORD
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nonn,nice
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AUTHOR
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Wouter Meeussen (wouter.meeussen(AT)pandora.be)
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EXTENSIONS
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Edited by M. F. Hasler (www.univ-ag.fr/~mhasler), Mar 31 2008
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