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Triangle whose (i,j)-th entry is binomial(i,j)*8^(i-j)*4^j.
0

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

%S 1,8,4,64,64,16,512,768,384,64,4096,8192,6144,2048,256,32768,81920,

%T 81920,40960,10240,1024,262144,786432,983040,655360,245760,49152,4096,

%U 2097152,7340032,11010048,9175040,4587520,1376256,229376,16384

%N Triangle whose (i,j)-th entry is binomial(i,j)*8^(i-j)*4^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_.