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%I #6 Nov 21 2013 12:47:23
%S 0,1,4,85,35917545547686059365808220080151141317128
%N a(n) = a(n-1)+3^a(n-1).
%F a(n) = A055591(n-1)+A055590(n)
%e a(3) = 4+3^4 = 4+81 = 85
%t NestList[#+3^#&,0,4] (* _Harvey P. Dale_, Apr 18 2012 *)
%Y Cf. A034797, A055590.
%K easy,nonn
%O 0,3
%A _Henry Bottomley_, May 26 2000