%I

%S 1,2,3,4,5,6,8,9,10,11,12,20,21,28,30,35,36,60,84,156

%N A finite sequence associated with the Lie algebra E_6.

%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_.