A139517 - OEIS

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A139517

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

3, 29, 15787, 167776541, 4645498532379389, 1088248917469233866137385062583, 20134824338000979687246821562710150100678729578625534526933, 7555384973907056074914229240175821963966793778695751877194777853748248059480070724299647198101903944083524382569707 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,1`
	COMMENTS	`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 * A156026 A171883 A112981` `Adjacent sequences: A139514 A139515 A139516 * A139518 A139519 A139520`
	KEYWORD	`easy,nonn,frac`
	AUTHOR	`Paolo P. Lava & Giorgio Balzarotti (paoloplava(AT)gmail.com), Apr 28 2008`

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Last modified February 16 21:04 EST 2012. Contains 205969 sequences.