id:A104389 - OEIS Search Results

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Repdigits which are the average of two successive primes.

+0
4

4, 6, 9, 99, 111, 4444, 111111111, 555555555555, 9999999999999999, 111111111111111111, 444444444444444444, 555555555555555555555, 777777777777777777777777, 333333333333333333333333333333333 (list; graph; listen)

	OFFSET	`1,1`
	FORMULA	`a(n)=(A104387(n)+A104388(n))/2`
	CROSSREFS	`Corresponding primes: A104387, A104388.` `Cf. A054268, A104386, A104387, A104388.` `Sequence in context: A107342 A086698 A115666 this_sequence A115655 A084350 A028279` `Adjacent sequences: A104386 A104387 A104388 this_sequence A104390 A104391 A104392`
	KEYWORD	`nonn,base`
	AUTHOR	`Zak Seidov (zakseidov(AT)yahoo.com), Mar 04 2005`
	EXTENSIONS	`More terms from Giovanni Resta (g.resta(AT)iit.cnr.it), Apr 05 2006`

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Last modified July 24 12:00 EDT 2008. Contains 142294 sequences.

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