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A186979 Number of ordered octuples of distinct pairwise coprime positive integers with largest element n. 4

%I

%S 8,0,65,2,4,2,339,8,291,31,264,42,2576,8,6527,1436,967,610,1518,232,

%T 21395,1793,3123,1002,50310,540,93852,8394,8646,9696,187722,6072,

%U 141942,13860,44814,25542,472593,15444,126012,33198,96078,60294,959714

%N Number of ordered octuples of distinct pairwise coprime positive integers with largest element n.

%H Alois P. Heinz, <a href="/A186979/b186979.txt">Table of n, a(n) for n = 17..200</a>

%e a(20) = 2 because there are 2 ordered octuples of distinct pairwise coprime positive integers with largest element 20: (1,3,7,11,13,17,19,20), (1,7,9,11,13,17,19,20).

%Y Column 8 of triangle A186972. First differences of A186984.

%K nonn

%O 17,1

%A _Alois P. Heinz_, Mar 02 2011

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Last modified January 22 18:06 EST 2019. Contains 319365 sequences. (Running on oeis4.)