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A089728 a(n) = least prime of the form nk+1 where the sequence of k is a rearrangement of the natural numbers. 0
2, 5, 13, 13, 31, 31, 71, 73, 73, 71, 199, 157, 157, 211, 211, 337, 199, 419 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..18.

CROSSREFS

Sequence in context: A189993 A112838 A111296 * A127987 A247543 A220268

Adjacent sequences:  A089725 A089726 A089727 * A089729 A089730 A089731

KEYWORD

nonn

AUTHOR

Amarnath Murthy, Nov 18 2003

STATUS

approved

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Last modified June 24 13:17 EDT 2019. Contains 324325 sequences. (Running on oeis4.)