id:A069257 - OEIS Search Results

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Denominator of the last term of the Egyptian fraction sum (using the greedy algorithm) which satisfies 1 = 1/n + 1/(n+1) + 1/(n+2) ... 1/a(n).

+0
1

6, 20, 57960, 3145940416080, 5765760, 288680192354725622464710969631440008928, 20484953806009937929429725901717124022833778640, 59553628273094395440, 102119994931499628863688098762720537989600 (list; graph; listen)

	OFFSET	`2,1`
	COMMENT	`The next term in the series, a(11), is 7*10^192.`
	EXAMPLE	`Since 1 = 1/3 + 1/4 + 1/5 + 1/6 + 1/20, a(3) = 20.`
	CROSSREFS	`Adjacent sequences: A069254 A069255 A069256 this_sequence A069258 A069259 A069260` `Sequence in context: A095854 A027268 A000388 this_sequence A133885 A064929 A102993`
	KEYWORD	`easy,frac,nonn`
	AUTHOR	`Christopher Lund (clund(AT)san.rr.com), Apr 14 2002`

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Last modified October 12 13:44 EDT 2008. Contains 144830 sequences.

AT&T Labs Research