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%I #3 Mar 30 2012 18:40:37
%S 2,6,30,210,1470,16170,210210,2732730,46456410,882671790,16770764010,
%T 385727572230,8871734161290,204049885709670,5917446685580430,
%U 183440847252993330,5686666264842793230,176286654210126590130
%N a(n) = product[k=1..n] P(k), where P(k) is the largest prime <= 2*k. a(n) = product[k=1..n] A060308(k).
%Y Cf. A020482, A049653, A060266-A060268, A060264, A060265, A060308, A118455, A118456, A118748.
%K easy,nonn
%O 1,1
%A _Jonathan Vos Post_, Apr 29 2006