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%I #11 Oct 16 2018 05:09:13
%S 1,1,1,2,4,14,46,224,1024,6320,36976,275792,1965664,17180144,
%T 144361456,1446351104,13997185024,158116017920,1731678144256,
%U 21771730437632,266182076161024,3686171162253824,49763143319190016,752594181757712384,11118629668610842624
%N Duplicate of A005437.
%K dead
%O 0,4
%A _Peter Luschny_, Jul 09 2012
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