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%I #3 Mar 30 2012 16:50:29
%S 1,1,1,1,1,1,3,4,4,1,9,16,16,4,1,39,85,84,32,7,1,169,439,465,210,57,7,
%T 1,819,2358,2714,1495,469,86,10,1,3969,12502,15732,10014,3750,834,124,
%U 10,1,19719,66471,90934,65746,28604,7864,1410,166,13,1
%N Triangle read by rows: numbers of isomers of unbranched a-4-catapolyoctagons.
%D J. Brunvoll, S. J. Cyvin and B. N. Cyvin, Isomer enumeration of polygonal systems..., J. Molec. Struct. (Theochem), 364 (1996), 1-13.
%e Triangle begins:
%e 1
%e 1 1
%e 1 1 1
%e 3 4 4 1
%e 9 16 16 4 1
%e 39 85 84 32 7 1
%e 169 439 465 210 57 7 1
%Y Columns give A121101, A121145, A121146.
%K nonn,tabl
%O 0,7
%A _N. J. A. Sloane_, Aug 18 2006
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