%I #5 Mar 30 2012 16:44:45
%S 1,2,3,4,10,12,28
%N A finite sequence associated with the Lie algebra D_4.
%D E. B. Dynkin, Semisimple subalgebras of semisimple Lie algebras, Am. Math. Soc. Translations, Series 2, Vol. 6, 1957, pp. 111-244, esp. p. 211.
%K nonn,fini,full
%O 0,2
%A _N. J. A. Sloane_.