タクシー数すう

noun

taxicab number

Mathematical term: the smallest number expressible as the sum of two positive cubes in n distinct ways. Named after the Hardy–Ramanujan anecdote involving taxicab number 1729.

• 千せん七なな百ひゃく二に十じゅう九きゅうは、二ふたつの立りっ方ぽう数すうの和わとして二ふた通とおりに表あらわせる有ゆう名めいなタクシー数すうです。

  1729 is a famous taxicab number expressible in two ways as a sum of two cubes.