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Triangle whose (i,j)-th entry is binomial(i,j)*11^(i-j)*4^j.
0

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

%S 1,11,4,121,88,16,1331,1452,528,64,14641,21296,11616,2816,256,161051,

%T 292820,212960,77440,14080,1024,1771561,3865224,3513840,1703680,

%U 464640,67584,4096,19487171,49603708,54113136,32795840,11925760

%N Triangle whose (i,j)-th entry is binomial(i,j)*11^(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_.