id:A098819 - OEIS Search Results

Search: id:A098819

Displaying 1-1 of 1 results found.

page 1

Least k such that k*(Mersenne_prime(n)^2) +1 is prime.

+0
1

2, 4, 16, 12, 22, 28, 30, 22, 138, 12, 102, 180, 426, 1444, 9502, 6568, 2212, 5380, 9942, 3034, 24222, 31530 (list; graph; listen)

	OFFSET	`1,1`
	EXAMPLE	`2*((2^2-1)^2)+1=19 prime so a(1)=2`
	CROSSREFS	`Sequence in context: A019540 A109584 A073923 this_sequence A067846 A135569 A131560` `Adjacent sequences: A098816 A098817 A098818 this_sequence A098820 A098821 A098822`
	KEYWORD	`more,nonn`
	AUTHOR	`Pierre CAMI (pierrecami(AT)tele2.fr), Oct 08 2004`
	EXTENSIONS	`a(19)-a(22) from Donovan Johnson (donovan.johnson(AT)yahoo.com), Mar 23 2008`

page 1

Search completed in 0.002 seconds

Last modified July 26 13:41 EDT 2008. Contains 142293 sequences.