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%I #4 Oct 01 2013 17:57:42
%S 1,6,40,1728,10560,604800,4386816,348364800,76859228160,490311843840,
%T 172454510592000,6951148594790400,54188395462656000,
%U 5673488083845120000,2112698895984230400000,458667310457770160947200
%N a(n) = Product_{i=2..n} (prime(n+1)-prime(i)).
%F (3-2)=1, (5-2)*(5-3)=6, (7-2)*(7-3)*(7-5)=40, ...
%o (PARI) fnpr(n)=forprime(x=3,n,pr=1; forprime(y=2,x-1,pr=pr*(x-y)); print1(pr","))
%K easy,nonn
%O 1,2
%A _Cino Hilliard_, Aug 05 2003
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