id:A109854 - OEIS Search Results

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Least K such that K*(3^(n+j))+1 is prime for j=0 to 4.

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20, 110, 110, 20980, 29580, 9860, 150780, 50260, 217490, 657770, 426650, 1999330, 2942960, 1295490, 431830, 437570, 436450, 7564120, 6449730 (list; graph; listen)

	OFFSET	`1,1`
	EXAMPLE	`20(3^(1+0))+1=61 prime` `20(3^(1+1))+1=181 prime` `20(3^(1+2))+1=541 prime` `20(3^(1+3))+1=1621 prime` `20*(3^(1+4))+1=4861 prime` `so for n=1 K=20.`
	CROSSREFS	`Sequence in context: A088831 A063785 A135174 this_sequence A008383 A024192 A086605` `Adjacent sequences: A109851 A109852 A109853 this_sequence A109855 A109856 A109857`
	KEYWORD	`nonn`
	AUTHOR	`Pierre CAMI (pierrecami(AT)tele2.fr), Aug 31 2005`

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Last modified July 26 23:19 EDT 2008. Contains 142293 sequences.

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