\( {\displaystyle 42=(-80\ 538\ 738\ 812\ 075\ 974)^{3}+80\ 435\ 758\ 145\ 817\ 515^{3}+12\ 602\ 123\ 297\ 335\ 631^{3} } \)
42 is the 5th Catalan number
Undergraduate Texts in Mathematics
Graduate Studies in Mathematics
42
\( {\displaystyle 42=(-80\ 538\ 738\ 812\ 075\ 974)^{3}+80\ 435\ 758\ 145\ 817\ 515^{3}+12\ 602\ 123\ 297\ 335\ 631^{3} } \)
42 is the 5th Catalan number
Undergraduate Texts in Mathematics
Graduate Studies in Mathematics