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A175193 a(n) = the smallest positive integer such that (the n-th prime)+a(n)! is prime, or -1 if no such prime exists. 3
1, 2, 2, 3, 2, 3, 2, 4, 3, 2, 3, 3, 2, 4, 3, 3, 2, 3, 3, 2, 3, 4, 3, 4, 3, 2, 3, 2, 5, 4, 4, 3, 2, 4, 2, 3, 3, 5, 3, 3, 2, 9, 2, 3, 2, 4, 5, 3, 2, 5, 3, 2, 7, 3, 3, 3, 2, 3, 3, 2, 4, 4, 3, 2, 4, 8, 3, 5, 2, 4, 3, 4, 3, 3, 5, 3, 5, 4, 5, 4, 2, 5, 2, 3, 4, 3, 5, 3, 2, 4, 4, 4, 5, 7, 4, 3, 6, 2, 4, 3, 4, 3, 3, 2, 3 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

A175194(n) = a(n)!.

LINKS

Table of n, a(n) for n=1..105.

FORMULA

A092789(n) = A000040(n) + a(n)!.

CROSSREFS

Cf. A082470, A092789, A175194.

Sequence in context: A087458 A052180 A065151 * A073093 A222084 A088873

Adjacent sequences:  A175190 A175191 A175192 * A175194 A175195 A175196

KEYWORD

nonn

AUTHOR

Leroy Quet, Mar 01 2010

EXTENSIONS

Extended by Ray Chandler, Mar 04 2010

STATUS

approved

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Last modified March 28 15:38 EDT 2017. Contains 284243 sequences.