id:A076198 - OEIS Search Results

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a(n)=least s>0 such that n!!-s is prime.

+0
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1, 1, 2, 1, 2, 1, 4, 7, 4, 7, 4, 23, 2, 1, 2, 97, 2, 19, 64, 17, 62, 19, 4, 1, 58, 23, 64, 157, 122, 47, 106, 47, 4, 29, 146, 31, 64, 29, 8, 71, 8, 43, 32, 31, 128, 67, 122, 41, 2, 37, 146, 137, 122, 191, 142, 59, 128, 71, 284, 109, 274, 1, 218, 97, 32, 83, 158, 53, 166 (list; graph; listen)

	OFFSET	`3,3`
	COMMENT	`Unlike the case n!!+s in A057019, there is no apparent rule for s here.`
	CROSSREFS	`Cf. A057019.` `Sequence in context: A058511 A131044 A106380 this_sequence A032021 A159829 A128515` `Adjacent sequences: A076195 A076196 A076197 this_sequence A076199 A076200 A076201`
	KEYWORD	`nonn`
	AUTHOR	`Zak Seidov (zakseidov(AT)yahoo.com), Nov 02 2002`

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Last modified November 25 14:49 EST 2009. Contains 167514 sequences.

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