OFFSET
7,1
LINKS
Alois P. Heinz, Table of n, a(n) for n = 7..200
EXAMPLE
a(7) = 2 because there are 2 ordered quintuples of distinct pairwise coprime positive integers with largest element 7: (1,2,3,5,7), (1,3,4,5,7).
CROSSREFS
KEYWORD
nonn
AUTHOR
Alois P. Heinz, Mar 01 2011
STATUS
approved