A154296 - OEIS

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A154296

Primes of the form : 1/x+2/x+3/x+4/x+5/x+6/x+7/x+..., x=15.

3, 7, 29, 31 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,1`
	COMMENTS	`Primes which are some triangular number A000217 divided by 15.`
	MATHEMATICA	`lst={}; s=0; Do[s+=n/15; If[Floor[s]==s, If[PrimeQ[s], AppendTo[lst, s]]], {n, 0, 9!}]; lst` `Select[(Accumulate[Range[200]])/15, PrimeQ] (* From Harvey P. Dale, Oct 30 2011 *)`
	CROSSREFS	`Cf. A057570, A154293` `Sequence in context: A143948 A018989 A073126 * A038900 A068485 A019352` `Adjacent sequences: A154293 A154294 A154295 * A154297 A154298 A154299`
	KEYWORD	`nonn,fini,full`
	AUTHOR	`Vladimir Orlovsky (4vladimir(AT)gmail.com), Jan 06 2009`

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Last modified February 14 23:53 EST 2012. Contains 205689 sequences.