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Triangle whose (i,j)-th entry is binomial(i,j)*11^(i-j)*3^j.
0

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

%S 1,11,3,121,66,9,1331,1089,297,27,14641,15972,6534,1188,81,161051,

%T 219615,119790,32670,4455,243,1771561,2898918,1976535,718740,147015,

%U 16038,729,19487171,37202781,30438639,13835745,3773385,617463,56133

%N Triangle whose (i,j)-th entry is binomial(i,j)*11^(i-j)*3^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_.