[math-fun] News on Taxicab and Cabtaxi numbers

The known information on Taxicab and Cabtaxi numbers goes up to Taxicab(6) and Cabtaxi(9). Here are new upper bounds, up to Taxicab(12) and Cabtaxi(20): http://cboyer.club.fr/Taxicab.htm A paper is in preparation. Christian.