The nth taxicab number Ta(n) is the smallest number representable in n ways as a sum of positive cubes. The numbers derive their name from the Hardy-Ramanujan number Ta(2) | = | 1729 | = | 1^3 + 12^3 | = | 9^3 + 10^3, which is associated with a story told about Ramanujan by G. H. Hardy.

cabtaxi number | Diophantine equation--3rd powers | Hardy-Ramanujan number | taxicab metric