Find the next number in this unusual sequence.
2, 3, 7, 25, 121, 721, 5041, 40321, ...
1! + 1, 2! + 1, 3! + 1, 4! + 1, 5! + 1, 6! + 1, 7! + 1, 8! + 1, 9! +1, 10! +1..........etc.
thank you!
what kind of a sequence is this?
