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

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

%S 1,3,11,9,66,121,27,297,1089,1331,81,1188,6534,15972,14641,243,4455,

%T 32670,119790,219615,161051,729,16038,147015,718740,1976535,2898918,

%U 1771561,2187,56133,617463,3773385,13835745,30438639,37202781

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