Question

0,9,26,65,124,( ）怎么计算

Answer 1

0→9=2×2×2+1

9→26=3×3×3-1

26→65=4×4×4+1

65→124=5×5×5-1

124→?=6×6×6+1

=127

推断出 n^3+(-1)^n ；即n的三次方加上（-1）的n次方