%I A073647
%S A073647 1,2,3,22,5,23,7,222,33,10,11,12,13,122,15,123,17,1222,133,20,21,22,23,
%T A073647 222,25,223,27,2222,233,30,31,32,33,322,35,323,37,3222,333,220,221,222,
%U A073647 223,2222,225,2223,227,22222,2233,50,51,52,53,522,55,523,57,5222,533
%N A073647 In decimal representation of n, replace composite digits (4, 6, 8 and 
               9) by their concatenated prime factorizations (22, 23, 222 and 33).
%Y A073647 Sequence in context: A114749 A141458 A080670 this_sequence A073646 A109671 
               A037276
%Y A073647 Adjacent sequences: A073644 A073645 A073646 this_sequence A073648 A073649 
               A073650
%K A073647 nonn,base
%O A073647 1,2
%A A073647 Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Aug 29 2002