(* initial terms of the main diagonal of 1/(1-x1/(1-x1)-...-x6/(1-x6)) *)
(* MK, 2010-08-27 *)
{1, 720, 19445040, 906140159280, 54259623434853360, 3751591832963936408880, 
 284751719071722748492598160, 23074162542675887567516737575120, 
 1962510523766609850302634846653001840, 
 173256558851090756974435967247639154062480}
