id:A065546 - OEIS Search Results

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a(n) is smallest prime > 2*a(n-1), a(1) = 13.

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13, 29, 59, 127, 257, 521, 1049, 2099, 4201, 8419, 16843, 33703, 67409, 134837, 269683, 539389, 1078787, 2157587, 4315183, 8630387, 17260781, 34521589, 69043189, 138086407, 276172823, 552345671, 1104691373, 2209382761 (list; graph; listen)

	OFFSET	`1,1`
	MATHEMATICA	`NextPrim[n_Integer] := Block[ {k = n + 1}, While[ !PrimeQ[k], k++ ]; Return[k]]; a[1] = 13; a[n_] := NextPrim[ 2*a[n - 1]]; Table[ a[n], {n, 1, 35} ]`
	CROSSREFS	`Sequence in context: A098062 A094481 A045637 this_sequence A075636 A139838 A141196` `Adjacent sequences: A065543 A065544 A065545 this_sequence A065547 A065548 A065549`
	KEYWORD	`nonn`
	AUTHOR	`Robert G. Wilson v (rgwv(AT)rgwv.com), Nov 28 2001`

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Last modified July 25 07:41 EDT 2008. Contains 142293 sequences.

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