Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).
%I #3 Mar 30 2012 16:50:31
%S 1,1,3,1,14,6,2,79,43,14,3,459,326,131,37,8,1,2800,2442,1172,418,108,
%T 20,1
%N Irregular triangle read by rows giving numbers of azulenoid isomers (see Brunvoll et al. for precise definition).
%D J. Brunvoll, S. J. Cyvin and B. N. Cyvin, Azulenoids, MATCH, No. 34, 1996, 91-108.
%e Triangle begins:
%e 1
%e 1
%e 3 1
%e 14 6 2
%e 79 43 14 3
%e 459 326 131 37 8 1
%e 2800 2442 1172 418 108 20 1
%K nonn,tabf
%O 1,3
%A _N. J. A. Sloane_, Sep 23 2006