A076208 - OEIS

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A076208

Numbers n such that (n!!+(n+1)!!+1)/2 is prime.

1, 2, 9, 15, 16, 17, 25, 64, 65, 88, 113, 135, 161, 225, 783, 967, 5135 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,2`
	CROSSREFS	`Cf. A006882 (double factorials), A076208, A076210, A076211.` `Sequence in context: A024472 A128780 A178849 * A057481 A083288 A184531` `Adjacent sequences: A076205 A076206 A076207 * A076209 A076210 A076211`
	KEYWORD	`nonn`
	AUTHOR	`Zak Seidov (zakseidov(AT)yahoo.com), Nov 02 2002`
	EXTENSIONS	`More terms (checked n<5300) from Hugo Pfoertner (hugo(AT)pfoertner.org), Jun 22 2003`

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Last modified February 16 09:00 EST 2012. Contains 205904 sequences.