id:A139517 - OEIS Search Results

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Denominators of an Egyptian fraction for e^(-1), using only prime numbers.

+0
3

3, 29, 15787, 167776541, 4645498532379389, 1088248917469233866137385062583, 20134824338000979687246821562710150100678729578625534526933, 75553849739070560749142292401758219639667937786957518771947778537482480594800707\ 24299647198101903944083524382569707 (list; graph; listen)

	OFFSET	`0,1`
	COMMENT	`Good approximation up to 799 decimal digits`
	MAPLE	`P:=proc(n) local a, i; a:=evalf(exp(1)^(-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);`
	CROSSREFS	`Cf. A139514-A139516, A139518-A139523.` `Sequence in context: A003190 A133663 A006526 this_sequence A156026 A112981 A082792` `Adjacent sequences: A139514 A139515 A139516 this_sequence A139518 A139519 A139520`
	KEYWORD	`easy,nonn,frac`
	AUTHOR	`Paolo P. Lava & Giorgio Balzarotti (ppl(AT)spl.at), Apr 28 2008`

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Last modified December 20 16:54 EST 2009. Contains 171081 sequences.

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