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A139515
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Denominators of an Egyptian fraction for Pi^(-1), using only prime numbers.
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2
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OFFSET
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0,1
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COMMENTS
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Good approximation up to 706 decimal digits.
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LINKS
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Table of n, a(n) for n=0..7.
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MAPLE
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P:=proc(n) local a, b, i, k; a:=evalf(Pi^(-1), 100); for i from 1 by 1 to n do if 1/ithprime(i)<a then a:=a-1/ithprime(i); print(a); print(ithprime(i)); fi; od; end: P(100000);
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CROSSREFS
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Cf. A139514, A139516-A139523.
Sequence in context: A090186 A205719 A332475 * A038708 A042719 A045717
Adjacent sequences: A139512 A139513 A139514 * A139516 A139517 A139518
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KEYWORD
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easy,nonn,frac
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AUTHOR
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Paolo P. Lava and Giorgio Balzarotti, Apr 28 2008
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EXTENSIONS
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Next term has 179 digits.
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STATUS
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approved
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