Search: id:A038270
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%I A038270
%S A038270 1,7,4,49,56,16,343,588,336,64,2401,5488,4704,1792,256,16807,48020,
%T A038270 54880,31360,8960,1024,117649,403368,576240,439040,188160,43008,
%U A038270 4096,823543,3294172,5647152,5378240,3073280,1053696,200704,16384
%N A038270 Triangle whose (i,j)-th entry is binomial(i,j)*7^(i-j)*4^j.
%D A038270 B. N. Cyvin et al., Isomer enumeration of unbranched catacondensed polygonal 
               systems with pentagons and heptagons, Match, No. 34 (Oct 1996), pp. 
               109-121.
%Y A038270 Sequence in context: A085047 A070427 A140721 this_sequence A100976 A152627 
               A113223
%Y A038270 Adjacent sequences: A038267 A038268 A038269 this_sequence A038271 A038272 
               A038273
%K A038270 nonn,tabl,easy
%O A038270 0,2
%A A038270 N. J. A. Sloane (njas(AT)research.att.com).

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