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Triangle whose (i,j)-th entry is binomial(i,j)*10^(i-j)*10^j.
0

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

%S 1,10,10,100,200,100,1000,3000,3000,1000,10000,40000,60000,40000,

%T 10000,100000,500000,1000000,1000000,500000,100000,1000000,6000000,

%U 15000000,20000000,15000000,6000000,1000000,10000000,70000000,210000000

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