id:A078682 - OEIS Search Results

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Start with n; iterate the process x -> ceiling(3x/2) until reach a prime. Sequence gives primes reached.

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2, 3, 5, 9094059599, 41, 9094059599, 11, 41, 9094059599, 23, 17, 41, 99390677, 9094059599, 23, 542705556759647203359434240657, 59, 41, 29, 99390677, 9094059599, 113, 53, 542705556759647203359434240657, 16323879599, 59, 41 (list; graph; listen)

	OFFSET	`1,1`
	PROGRAM	`(PARI) a(n)=if(n<0, 0, s=n; c=1; while(isprime(ceil(3s/2))==0, s=ceil(3s/2); c++); ceil(3*s/2))`
	CROSSREFS	`Sequence in context: A046476 A141186 A143712 this_sequence A075174 A075176 A134972` `Adjacent sequences: A078679 A078680 A078681 this_sequence A078683 A078684 A078685`
	KEYWORD	`nonn`
	AUTHOR	`Benoit Cloitre (benoit7848c(AT)orange.fr), Dec 17 2002`

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Last modified November 30 13:13 EST 2009. Contains 167758 sequences.

AT&T Labs Research