Examples
In practice it seems that 
is a large fraction
of 
and that 
is on the order of the average 
;
thus 
approximates 
to 
decimals; the sign of the
correction seems to be positive when the relative number of ancestors is fairly uniform,
but negative when there is a large preponderance of ancestors for some of the states.
Harold V. McIntosh
E-mail:mcintosh@servidor.unam.mx