%I #12 Nov 28 2015 19:14:53
%S 1,3,9,39,249,2559,5559,516069,10215759,233308629,6703001859,
%T 207263491989,7628001626799,311878265154009,13394639596824039,
%U 628284422185315449,33217442899375360179,1955977793053587999249
%N Erroneous version of A143293.
%Y Cf. A002110, A003422.
%K dead
%O 1,2