id:A074382 - OEIS Search Results

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Difference between (1+3^n)-th and (3^n)-th primes.

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2, 6, 4, 2, 6, 2, 12, 2, 12, 30, 18, 24, 10, 14, 32, 22, 12, 14, 10, 30, 12, 30, 44, 40, 54 (list; graph; listen)

	OFFSET	`1,1`
	FORMULA	`a(n)=p[1+3^n]-p[3^n]`
	EXAMPLE	`n=25: a(25)=54 because the 847288609443rd prime is 25270000074757 and the 847288609444th prime is 25270000074811.`
	CROSSREFS	`Cf. A074325, A038833.` `Sequence in context: A004600 A021795 A008904 this_sequence A061350 A046276 A003571` `Adjacent sequences: A074379 A074380 A074381 this_sequence A074383 A074384 A074385`
	KEYWORD	`hard,more,nonn`
	AUTHOR	`Labos E. (labos(AT)ana.sote.hu), Aug 22 2002`

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Last modified December 20 00:58 EST 2009. Contains 171054 sequences.