A054463 - OEIS

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A054463

Numbers n such that (n+1)^n - n^(n-1) is prime.

2, 5, 6, 9, 24 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,1`
	PROG	`(PARI) xp1toxp1(n)= { sr=0; forstep(x=2, n, 1, y=(x+1)^x - x^(x-1); if(ispseudoprime(y), print(x" "y" "); sr+= 1.0/y; ) ); print(); print(sr) }`
	CROSSREFS	`Sequence in context: A169779 A051677 A122965 * A007503 A184418 A112967` `Adjacent sequences: A054460 A054461 A054462 * A054464 A054465 A054466`
	KEYWORD	`nonn`
	AUTHOR	`Cino Hilliard (hillcino368(AT)gmail.com), Aug 30 2003`

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Last modified February 16 11:51 EST 2012. Contains 205908 sequences.