A089728 - OEIS

A089728

a(n) = least prime of the form nk+1 where the sequence of k is a rearrangement of the natural numbers.

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`

Last modified May 18 23:31 EDT 2022. Contains 353826 sequences. (Running on oeis4.)