id:A117849 - OEIS Search Results

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a(n) =(A001359[n]^2-1)/2

+0
1

2, 6, 30, 72, 210, 420, 870, 1260, 2550, 2862, 4692, 5550, 8010, 9120, 9702, 12882, 14280, 18090, 19740, 24180, 30102, 43890, 46440, 53130, 67860, 80940, 89700, 95172, 102720, 108570, 163620, 168510, 170982, 183612, 194040, 259590, 265740 (list; graph; listen)

	OFFSET	`0,1`
	COMMENT	`A sequence determined by the quadratic reciprocity power of twin primes:A001359.`
	MATHEMATICA	`f[n_] = If[Prime[n + 1] - Prime[n] - 2 == 0, Prime[n], {}] a = Flatten[Table[(f[n]^2 - 1)/4, {n, 1, 200}]]`
	CROSSREFS	`Cf. A001359.` `Sequence in context: A127517 A137825 A008341 this_sequence A088857 A099081 A051844` `Adjacent sequences: A117846 A117847 A117848 this_sequence A117850 A117851 A117852`
	KEYWORD	`nonn`
	AUTHOR	`Roger Bagula (rlbagulatftn(AT)yahoo.com), May 01 2006`

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Last modified November 18 20:14 EST 2008. Contains 147244 sequences.

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