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%I #5 Mar 30 2012 16:47:46
%S 1,10,9,100,180,81,1000,2700,2430,729,10000,36000,48600,29160,6561,
%T 100000,450000,810000,729000,328050,59049,1000000,5400000,12150000,
%U 14580000,9841500,3542940,531441,10000000,63000000,170100000,255150000
%N Triangle whose (i,j)-th entry is binomial(i,j)*10^(i-j)*9^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_.