id:A141651 - OEIS Search Results

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Primes of the form n/(2*(p(n)-p(n-1))), where p(n)=n-th prime.

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2, 2, 11, 2, 5, 19, 43, 23, 19, 31, 23, 79, 29, 59, 43, 139, 179, 181, 31, 223, 233, 79, 281, 293, 151, 157, 317, 53, 163, 109, 337, 359, 181, 43, 199, 83, 109, 463, 467, 241, 491, 523, 89, 607, 103, 631, 79, 643, 673, 233, 89, 179, 757, 773, 89, 821, 823, 839, 859, 433, 293 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`Entries may be repeated and are shown in order of increasing generator n.`
	EXAMPLE	`n=8: 8/(2(p(8)-p(8-1)))=8/(2(19-17))=2=a(1).` `n=24: 24/(2(p(24)-p(24-1)))=24/(2(89-83))=2=a(2).` `n=44: 44/(2(p(44)-p(44-1)))=44/(2(193-191))=11=a(3).` `n=48, 48/(2(p(48)-p(48)))=48/(2(223-211))=2=a(4).` `n=80: 80/(2(p(80)-p(80-1)))=80/(2(409-401))=5=a(5).` `n=152: 152/(2(p(152)-p(152-1)))=152/(2(881-877))=19=a(6).`
	CROSSREFS	`Cf. A000040.` `Adjacent sequences: A141648 A141649 A141650 this_sequence A141652 A141653 A141654` `Sequence in context: A001038 A027623 A037234 this_sequence A090525 A126806 A121871`
	KEYWORD	`nonn`
	AUTHOR	`Juri-Stepan Gerasimov (2stepan(AT)rambler.ru), Sep 13 2008`
	EXTENSIONS	`Corrected and extended by R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Sep 26 2008`

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Last modified November 8 07:45 EST 2009. Contains 166143 sequences.

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