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A076211 Numbers n such that (-n!!+(n+1)!!-1)/2 is prime. 3
3, 4, 7, 9, 17, 25, 28, 55, 73, 130, 172, 327, 601, 1201, 2329 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
Table of n, a(n) for n=1..15.
CROSSREFS
Cf. A006882 (double factorials), A076208, A076209, A076210.
Sequence in context: A108796 A364684 A048849 * A167186 A221212 A218278
Adjacent sequences: A076208 A076209 A076210 * A076212 A076213 A076214
KEYWORD
nonn
AUTHOR
Zak Seidov, Nov 02 2002
EXTENSIONS
More terms (checked n<5000) from Hugo Pfoertner, Jun 22 2003
STATUS
approved

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Last modified May 21 21:53 EDT 2024. Contains 372738 sequences. (Running on oeis4.)