id:A079447 - OEIS Search Results

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Primes p such that there is an integer x satisfying p=floor(x*H(x)) where H(x) denotes the x-th harmonic number (i.e. H(x)=1+1/2+1/3+....+1/x).

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2, 3, 5, 11, 29, 37, 41, 67, 71, 149, 181, 191, 197, 229, 241, 251, 257, 307, 353, 359, 383, 389, 401, 443, 449, 461, 479, 521, 557, 563, 569, 647, 653, 661, 673, 743, 769, 787, 827, 887, 1033, 1129 (list; graph; listen)

	OFFSET	`1,1`
	EXAMPLE	`10sum(k=1,10,1/k)=29.2896825...hence 29=floor(10H(10)) and 29 is in the sequence.`
	CROSSREFS	`Sequence in context: A098179 A055228 A098642 this_sequence A084865 A047934 A090235` `Adjacent sequences: A079444 A079445 A079446 this_sequence A079448 A079449 A079450`
	KEYWORD	`nonn`
	AUTHOR	`Benoit Cloitre (benoit7848c(AT)orange.fr), Jan 13 2003`

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Last modified September 8 13:03 EDT 2008. Contains 143486 sequences.

AT&T Labs Research