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A136350 Primorial numbers #p such that (#p)-1 is composite. 4
210, 510510, 9699690, 223092870, 6469693230, 200560490130, 7420738134810, 13082761331670030, 614889782588491410, 32589158477190044730, 1922760350154212639070, 117288381359406970983270 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
This sequence is different from A121069 and A002110.
LINKS
FORMULA
{A002110(j): A002110(j)-1 in A002808}. - R. J. Mathar, Jul 23 2008
EXAMPLE
a(1)=210 because 209=A002110(4)-1 is not prime.
CROSSREFS
Sequence in context: A353111 A229671 A134236 * A068297 A196887 A028677
KEYWORD
easy,nonn
AUTHOR
Enoch Haga, Dec 25 2007
EXTENSIONS
Edited and extended by R. J. Mathar, Jul 23 2008
STATUS
approved

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Last modified April 24 20:08 EDT 2024. Contains 371963 sequences. (Running on oeis4.)