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Triangle whose (i,j)-th entry is binomial(i,j)*12^(i-j)*2^j.
0

%I #5 Mar 30 2012 16:47:46

%S 1,12,2,144,48,4,1728,864,144,8,20736,13824,3456,384,16,248832,207360,

%T 69120,11520,960,32,2985984,2985984,1244160,276480,34560,2304,64,

%U 35831808,41803776,20901888,5806080,967680,96768,5376,128

%N Triangle whose (i,j)-th entry is binomial(i,j)*12^(i-j)*2^j.

%D B. N. Cyvin et al., Isomer enumeration of unbranched catacondensed polygonal systems with pentagons and heptagons, Match, No. 34 (Oct 1996), pp. 109-121.

%K nonn,tabl,easy

%O 0,2

%A _N. J. A. Sloane_.