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Triangle whose (i,j)-th entry is binomial(i,j)*12^(i-j)*6^j.
0

%I #7 Apr 01 2013 11:31:53

%S 1,12,6,144,144,36,1728,2592,1296,216,20736,41472,31104,10368,1296,

%T 248832,622080,622080,311040,77760,7776,2985984,8957952,11197440,

%U 7464960,2799360,559872,46656,35831808,125411328,188116992,156764160

%N Triangle whose (i,j)-th entry is binomial(i,j)*12^(i-j)*6^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.

%t Flatten[Table[Binomial[i,j]12^(i-j) 6^j,{i,0,10},{j,0,i}]] (* _Harvey P. Dale_, Apr 01 2013 *)

%K nonn,tabl,easy

%O 0,2

%A _N. J. A. Sloane_.