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A038305 Triangle whose (i,j)-th entry is binomial(i,j)*10^(i-j)*3^j. 1

%I

%S 1,10,3,100,60,9,1000,900,270,27,10000,12000,5400,1080,81,100000,

%T 150000,90000,27000,4050,243,1000000,1800000,1350000,540000,121500,

%U 14580,729,10000000,21000000,18900000,9450000,2835000,510300,51030

%N Triangle whose (i,j)-th entry is binomial(i,j)*10^(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.

%H Harvey P. Dale, <a href="/A038305/b038305.txt">Table of n, a(n) for n = 0..1000</a>

%t Table[Binomial[i,j]10^(i-j) 3^j,{i,0,10},{j,0,i}]//Flatten (* _Harvey P. Dale_, Aug 19 2018 *)

%K nonn,tabl,easy

%O 0,2

%A _N. J. A. Sloane_.

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Last modified September 19 09:06 EDT 2020. Contains 337178 sequences. (Running on oeis4.)