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Erroneous version of A143293.
0

%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