OFFSET
1,1
LINKS
Eric Weisstein's World of Mathematics, Cousin Primes
EXAMPLE
a(5) = 853 as the consecutive primes 853, 857, 859, 863, 877, 881, 883, 887, 907 and 911 form exactly five consecutive pairs (p, p+4) of cousin primes and no smaller string of consecutive primes has this property.
CROSSREFS
KEYWORD
more,nonn
AUTHOR
Rick L. Shepherd, Jan 16 2005
EXTENSIONS
a(6)-a(8) from Donovan Johnson, Sep 03 2008
STATUS
approved