id:A139520 - OEIS Search Results

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Denominators of an Egyptian fraction for Catalan constant, using only prime numbers and allowing repetitions.

+0
3

2, 3, 13, 179, 8161, 17319373, 24288185721827, 115965508643355137277722177, 235520782452648150490328050427067627593114827790363, 34927738441197833781363566983541975805101681093066970452740268721673910282017002\ 081858804680098723909 (list; graph; listen)

	OFFSET	`0,1`
	COMMENT	`Good approximation up to 789 decimal digits`
	MAPLE	`P:=proc(n) local a, i; a:=evalf(Catalan, 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);`
	CROSSREFS	`Cf. A139514-A139519, A139521-A139523.` `Sequence in context: A113785 A118323 A113494 this_sequence A132535 A056806 A119564` `Adjacent sequences: A139517 A139518 A139519 this_sequence A139521 A139522 A139523`
	KEYWORD	`easy,nonn,frac`
	AUTHOR	`Paolo P. Lava & Giorgio Balzarotti (ppl(AT)spl.at), Apr 28 2008`

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Last modified December 15 00:47 EST 2009. Contains 170825 sequences.

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