A099439 - OEIS

This site is supported by donations to The OEIS Foundation.

A099439

Numbers n such that A000295(n)=2^n-n-1 is prime.

4, 10, 14, 16, 26, 50, 56, 70, 116, 2072, 6250, 13670, 14216, 14626 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,1`
	COMMENTS	`The next term is > 25000.` `Equals A063791 + 1 - Herman Jamke (hermanjamke(AT)fastmail.fm), Jan 03 2008`
	LINKS	`User group for PFGW & PrimeForm programs.`
	EXAMPLE	`a(1)=4 because 2^4-4-1=11 is prime.`
	CROSSREFS	`Cf. A000295 2^n-n-1 (column 2 of the Eulerian numbers), A099440 primes in A000295, A099441 2^n-n-1 is a semiprime, A099442 semiprimes in A000295.` `Sequence in context: A114719 A116954 A102686 * A146763 A190346 A001581` `Adjacent sequences: A099436 A099437 A099438 * A099440 A099441 A099442`
	KEYWORD	`hard,nonn`
	AUTHOR	`Hugo Pfoertner (hugo(AT)pfoertner.org), Oct 18 2004`

Content is available under The OEIS End-User License Agreement .

Last modified February 15 14:02 EST 2012. Contains 205811 sequences.