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A076198 a(n)=least s>0 such that n!!-s is prime. 0
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; refs; listen; history; internal format)
OFFSET

3,3

COMMENTS

Unlike the case n!!+s in A057019, there is no apparent rule for s here.

CROSSREFS

Cf. A057019.

Sequence in context: A085063 A058511 A106380 * A032021 A159829 A128515

Adjacent sequences:  A076195 A076196 A076197 * A076199 A076200 A076201

KEYWORD

nonn

AUTHOR

Zak Seidov (zakseidov(AT)yahoo.com), Nov 02 2002

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Last modified February 16 12:15 EST 2012. Contains 205909 sequences.