%I A036307
%S A036307 49,77,119,121,187,289,343,497,539,781,833,847,1207,1309,1331,2023,
%T A036307 2057,2401,3179,3479,3773,4913,5041,5467,5831,5929,7819,8197,8449,8591,
%U A036307 9163,9317,12287,12439,12881,13277,14161,14399,14641,16807,18989,19547
%N A036307 Composite numbers n such that digits of prime factors of n are either 
               1 or 7.
%Y A036307 Cf. A003599, A036302-A036325.
%Y A036307 Sequence in context: A038510 A063163 A103216 this_sequence A056938 A106311 
               A006832
%Y A036307 Adjacent sequences: A036304 A036305 A036306 this_sequence A036308 A036309 
               A036310
%K A036307 nonn,base
%O A036307 1,1
%A A036307 Patrick De Geest (pdg(AT)worldofnumbers.com), Dec 15 1998.