id:A161220 - OEIS Search Results

Search: id:A161220

Displaying 1-1 of 1 results found.

page 1

The nth member of a twin prime pair minus 2*n.

+0
1

1, 1, 1, 3, 3, 5, 5, 13, 13, 21, 21, 35, 35, 43, 43, 69, 69, 71, 71, 97, 97, 105, 105, 131, 131, 139, 139, 141, 141, 167, 167, 175, 175, 201, 201, 209, 209, 235, 235, 267, 267, 335, 335, 343, 343, 369, 369, 425, 425, 469, 469, 495, 495, 509, 509, 529, 529, 543 (list; graph; listen)

	OFFSET	`1,4`
	FORMULA	`a(n)=A001097(n)-A005843(n).`
	EXAMPLE	`a(1) = 3-21=1. a(2) =5-22=1. a(3)=7-23=1. a(4)=11-24=3.`
	CROSSREFS	`Cf. A001097, A005843.` `Sequence in context: A077953 A077980 A146245 this_sequence A032022 A147198 A147048` `Adjacent sequences: A161217 A161218 A161219 this_sequence A161221 A161222 A161223`
	KEYWORD	`nonn`
	AUTHOR	`Juri-Stepan Gerasimov (2stepan(AT)rambler.ru), Jun 06 2009`
	EXTENSIONS	`Entries confirmed by R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jun 23 2009`

page 1

Search completed in 0.002 seconds

Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

AT&T Labs Research