User blog comment:Wythagoras/Dollar function formal definition/@comment-5029411-20130622170737

a$[0->[0->[0->1]]] is growth rate theta(e_(Omega+1)+theta(e_(Omega+1)+theta(e_(Omega+1))))

a$[0->[0->1]_2] is growth rate theta(e_(Omega+1)+Omega)