OFFSET
1,1
COMMENTS
a(n) is 0 if no such pair of prime quadruples is conjectured to exist for the indicated difference.
When n is congruent to 2 or 5 mod 7 (A047385) no solution exists because one of the terms is divisible by 7. [Jud McCranie, Jun 17 2013]
LINKS
Jud McCranie, Table of n, a(n) for n = 1..10000
EXAMPLE
For n=3, a(3)=11, since 11, 13, 17, 19 is a prime quadruple. The next prime quadruple is 101, 103, 107, 109. The difference 101-11=90, which is equal to 30*3.
CROSSREFS
KEYWORD
nonn
AUTHOR
Ray G. Opao, Jun 24 2012
STATUS
approved