Typo in A074473

[N. J. A. Sloane]

Jose Brox commented (correctly) that A074473 is somewhat unsatisfactory.
I am changing the description and adding a new version A102419
which will serve as a bridge with A060445.

These changes won't be visible until the
next update, which may not be for a few
days - I am in the middle of a huge update,
trying to get caught up with commenmts
from the past two weeks

NJAS