%I A038222
%S A038222 1,3,4,9,24,16,27,108,144,64,81,432,864,768,256,243,1620,4320,5760,
%T A038222 3840,1024,729,5832,19440,34560,34560,18432,4096,2187,20412,81648,
%U A038222 181440,241920,193536,86016,16384,6561,69984,326592,870912,1451520
%N A038222 Triangle whose (i,j)-th entry is binomial(i,j)*3^(i-j)*4^j.
%D A038222 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 A038222 Sequence in context: A032789 A089243 A034921 this_sequence A038629 A105229 
               A080849
%Y A038222 Adjacent sequences: A038219 A038220 A038221 this_sequence A038223 A038224 
               A038225
%K A038222 nonn,tabl,easy
%O A038222 0,2
%A A038222 N. J. A. Sloane (njas(AT)research.att.com).