%I #5 Mar 30 2012 16:47:46
%S 1,4,9,16,72,81,64,432,972,729,256,2304,7776,11664,6561,1024,11520,
%T 51840,116640,131220,59049,4096,55296,311040,933120,1574640,1417176,
%U 531441,16384,258048,1741824,6531840,14696640,19840464,14880348
%N Triangle whose (i,j)-th entry is binomial(i,j)*4^(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_.
|