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a(n) = prime(1)^prime(2)^prime(3)^...^prime(n).
2

%I #11 Aug 05 2015 11:58:47

%S 2,8,

%T 14134776518227074636666380005943348126619871175004951664972849610340958208

%N a(n) = prime(1)^prime(2)^prime(3)^...^prime(n).

%e a(1) = 2; a(2) = 2^3; a(3) = 2^3^5.

%Y Cf. A140319, A248012.

%K nonn

%O 1,1

%A _Peter Woodward_, Jul 29 2015