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Search: id:A139521
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| A139521 |
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Denominators of an Egyptian Fraction for sqrt(2), using only prime numbers and allowing repetitions. |
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+0
3
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| 2, 2, 3, 13, 257, 15131, 83002267, 1696274711037607, 62384117997457733544603820483, 36029882103194027595685829384642730184657157184554323517
(list; graph; listen)
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OFFSET
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0,1
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COMMENT
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Good approximation up to 799 decimal digits
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MAPLE
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P:=proc(n) local a, i; a:=evalf((sqrt(2))-1, 100); print(2); print(2); 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-A139520, A139522, A139523.
Sequence in context: A126339 A100362 A062439 this_sequence A019515 A094352 A073828
Adjacent sequences: A139518 A139519 A139520 this_sequence A139522 A139523 A139524
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KEYWORD
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easy,nonn,frac
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AUTHOR
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Paolo P. Lava & Giorgio Balzarotti (ppl(AT)spl.at), Apr 28 2008
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