N 3 n 2 1 July 8, 2019 16 32 64 128 N 3 n /( n 2 ) = 10 N 3 5 n 1 2 3 n 2 18 3 n 2 12 N 3 2 16 P n 3 n 2 n 1 N 4 n 3 1 2 5 n 3 n 2 2n 1 N 2 /( n 3 1 convergent or divergent 3 n 5 )= 7 2 n 1 1 2 3 n n 1 2 induction A 6 n 3 n 2 n 1 N 1 )( 2n 3 n 2 n 12 3 n 2 n 1 )= m 2 1 2 n 3 n converge
