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A084361 a(1) = 1; a(n+1) is the least prime of the form (2^k)*a(n)+-1, for some positive k. 1
1, 3, 5, 11, 23, 47, 751, 6007, 24029, 192233, 768931, 98423167, 206408341520383, 54108708279519281153, 907793486286483356068610047, 58098783122334934788391043009 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
LINKS
EXAMPLE
a(7) = 751 because a(6)=47 and in 2*47-1, 2*47+1, 4*47-1, 4*47+1, ... 16*47-1, ...: 751 is the first prime.
CROSSREFS
Cf. A083201.
Sequence in context: A335883 A030494 A246491 * A077229 A335098 A018113
KEYWORD
nonn
AUTHOR
Don Reble, Jun 21 2003
STATUS
approved

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Last modified June 22 00:43 EDT 2024. Contains 373561 sequences. (Running on oeis4.)