キャブタクシー数
C a b t a x i ( 7 ) = 11302198488 = 1926 3 + 1608 3 = 1939 3 + 1589 3 = 2268 3 − 714 3 = 2310 3 − 1008 3 = 2492 3 − 1610 3 = 4230 3 − 4008 3 = 9492 3 − 9450 3 {\displaystyle {\begin{matrix}\mathrm {Cabtaxi} (7)&=&11302198488&=&1926^{3}+1608^{3}\\&&&=&1939^{3}+1589^{3}\\&&&=&2268^{3}-714^{3}\\&&&=&2310^{3}-1008^{3}\\&&&=&2492^{3}-1610^{3}\\&&&=&4230^{3}-4008^{3}\\&&&=&9492^{3}-9450^{3}\end{matrix}}}