login
Triangle whose (i,j)-th entry is binomial(i,j)*4^(i-j)*12^j.
0

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

%S 1,4,12,16,96,144,64,576,1728,1728,256,3072,13824,27648,20736,1024,

%T 15360,92160,276480,414720,248832,4096,73728,552960,2211840,4976640,

%U 5971968,2985984,16384,344064,3096576,15482880,46448640,83607552

%N Triangle whose (i,j)-th entry is binomial(i,j)*4^(i-j)*12^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_.