id:A105469 - OEIS Search Results

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Number of numbers of the form 6k+3 with prime(n) <= 6k+3 < prime(n+1).

+0
1

0, 1, 0, 1, 0, 1, 0, 1, 1, 0, 1, 1, 0, 1, 1, 1, 0, 1, 1, 0, 1, 1, 1, 1, 1, 0, 1, 0, 1, 2, 1, 1, 0, 2, 0, 1, 1, 1, 1, 1, 0, 2, 0, 1, 0, 2, 2, 1, 0, 1, 1, 0, 2, 1, 1, 1, 0, 1, 1, 0, 2, 2, 1, 0, 1, 2, 1, 2, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 0, 2, 0, 1, 1, 1, 1, 1, 0, 1, 2, 1, 1, 1, 1, 1, 2, 0, 3, 1, 2, 1, 1, 0, 1 (list; graph; listen)

	OFFSET	`1,30`
	EXAMPLE	`a(4)=1 because between prime(4)=7 and prime(5)=11 there is one number of the form 6k+3: 9.`
	MATHEMATICA	`f[n_] := Count[Table[Mod[k, 6], {k, Prime[n], Prime[n + 1] - 1}], 3]; Table[f[n], {n, 120}] (Chandler)`
	CROSSREFS	`Sequence in context: A108934 A108947 A097608 this_sequence A136167 A140748 A070821` `Adjacent sequences: A105466 A105467 A105468 this_sequence A105470 A105471 A105472`
	KEYWORD	`easy,nonn`
	AUTHOR	`Giovanni Teofilatto (g.teofilatto(AT)tiscalinet.it), May 02 2005`
	EXTENSIONS	`Corrected and extended by Ray Chandler (rayjchandler(AT)sbcglobal.net), Oct 17 2006`

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Last modified July 26 13:41 EDT 2008. Contains 142293 sequences.

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