Give the next number in this unusual sequence: 2,3,7,25,121,721,5041,40321.

362881

Step-by-step explanation:

The right sequence should be

2,3,7,25,121,721,5041,40321, 362881

Here, the formula used is a (n) = n!+1 where n=1 to infininity

n (1) = 2=1!+1=2

n (2) = 3=2!+1=3

n (3) = 7=3!+1=7

n (4) = 25=4!+1=25

n (5) = 121=5!+1=121

n (6) = 721=6!+1=721

n (7) = 5041=7!+1=5041

n (8) = 40321=8!+1=40321

n (9) = 362881=9!+1=362881