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%I #4 Aug 21 2013 12:11:48
%S 1,4,5,6,10,11,12,13,15,16,17,18,20,21,22,23,28,29,30,31,33,34,35,36,
%T 38,39,40,41,43,44,45,46,49,50,51,52,54,55,56,57,59,60,61,62,64,65,66,
%U 67,70,71
%N a(n) = min{j : A120509(j) = n}.
%H C. Deugau and F. Ruskey, <a href="http://www.cs.uwaterloo.ca/journals/JIS/VOL12/Ruskey/ruskey6.pdf">Complete k-ary Trees and Generalized Meta-Fibonacci Sequences</a>, J. Integer Seq., Vol. 12. [This is a later version than that in the GenMetaFib.html link]
%H C. Deugau and F. Ruskey, <a href="http://www.cs.uvic.ca/~ruskey/Publications/MetaFib/GenMetaFib.html">Complete k-ary Trees and Generalized Meta-Fibonacci Sequences</a>
%F g.f.: P(z) = z / (1-z) * (1 + sum(z^(m^4) * (2 + 1 / (1 - z^(m^4))), m=0..infinity))
%p p := proc(n)
%p if n=1 then return 1; end if;
%p for j from p(n-1)+1 to infinity do
%p if A120509(j) = n then return j; fi; od;
%p end proc;
%Y Cf. A120509, A120531.
%K nonn
%O 1,2
%A _Frank Ruskey_ and Chris Deugau (deugaucj(AT)uvic.ca), Jun 20 2006
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