id:A154731 - OEIS Search Results

Search: id:A154731

Displaying 1-1 of 1 results found.

page 1

Integers of the form k=n^3-n^2, such that k-+1 are primes.

+0
3

4, 18, 180, 2028, 8820, 34848, 108288, 191748, 720900, 875520, 960498, 990000, 1355310, 1629108, 1713600, 1756920, 2334948, 2609028, 7376850, 8448048, 21639798, 37148148, 42023088, 48893940, 60544008, 63840000, 100328400 (list; graph; listen)

	OFFSET	`1,1`
	MATHEMATICA	`lst={}; Do[k=n^3-n^2; If[PrimeQ[k-1]&&PrimeQ[k+1], AppendTo[lst, p]], {n, 7!}]; lst`
	CROSSREFS	`Cf. A111503` `Sequence in context: A156870 A145075 A058924 this_sequence A071173 A143993 A145660` `Adjacent sequences: A154728 A154729 A154730 this_sequence A154732 A154733 A154734`
	KEYWORD	`nonn`
	AUTHOR	`Vladimir Orlovsky (4vladimir(AT)gmail.com), Jan 14 2009`

page 1

Search completed in 0.004 seconds

Last modified November 24 14:25 EST 2009. Contains 167438 sequences.

AT&T Labs Research