%I #3 Oct 06 2015 14:13:56

%S 1,1,1,5,273,2982616,1830034134296583,

%T 4219771415190209120329546223112205,

%U 159545978336249166974717516821935499136450045008874233960892835107904996

%N Nearest integer to 2^(2^(n-1))/(2*n!).

%H R. F. Wheeler, <a href="/A002543/a002543_2.pdf">An asymptotic formula for the number of complete propositional connectives</a>, Z. Math. Logik Grundlagen Math. 8 (1962), 1-4. [Annotated scanned copy]

%Y An approximation to A262546.

%K nonn

%O 1,4

%A _N. J. A. Sloane_, Oct 06 2015