A160273 - OEIS

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A160273

Successive differences (divided by 3) of the average of twin prime pairs divided by 2 (A040040)

1, 1, 2, 2, 3, 2, 5, 1, 5, 2, 5, 2, 1, 5, 2, 5, 2, 5, 6, 12, 2, 5, 10, 8, 5, 3, 4, 3, 25, 2, 1, 5, 4, 23, 2, 3, 2, 5, 10, 13, 8, 2, 2, 3, 18, 4, 5, 1, 20, 2, 8, 5, 4, 11, 14, 1, 9, 3, 8, 5, 9, 1, 4, 3 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,3`
	MAPLE	ZL := []; for p to 1000000 do if `and`(isprime(p), isprime(p+2)) then ZL := [op(ZL), ((p+2)^2-p^2)(1/8)] end if end do; a := [seq((ZL[i+1]-ZL[i])(1/3), i = 2 .. nops(ZL)-1)]
	CROSSREFS	`A040040` `Sequence in context: A153725 A102247 A054249 * A141822 A033099 A018892` `Adjacent sequences: A160270 A160271 A160272 * A160274 A160275 A160276`
	KEYWORD	`hard,nonn`
	AUTHOR	`Stephen Crowley (crow(AT)crowlogic.net), May 07 2009`

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Last modified February 15 21:56 EST 2012. Contains 205860 sequences.