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%I #4 Mar 30 2012 18:39:45
%S 1,2,5,10,19,31,54,77,108,155,206,274,356,458,579,715,884,1068,1270,
%T 1531,1805
%N a(n) = index j such that A121736(j)=A030649(n).
%C A030649 is a subset of A121736 (A. R. Povolotsky, Nov 06 2007). - _R. J. Mathar_, Nov 16 2007
%F A121736(a(n))=A030649(n). - _R. J. Mathar_, Nov 16 2007
%e For n=3, we list the index a(3)=5 because A121736(5)=1463 equals A030649(3).
%Y Cf. A030649, A121736.
%K nonn
%O 1,2
%A _Alexander R. Povolotsky_, Nov 06 2007
%E Better definition from _R. J. Mathar_, Nov 16 2007
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