Answer
$$1,\frac{1}{2},\frac{1}{6},\frac{1}{24}$$
Work Step by Step
$a_{n}=\frac{1}{n!},$ so
$$a_{1}=\frac{1}{1!}=1$$
$$a_{2}=\frac{1}{2!}=\frac{1}{2}$$
$$a_{3}=\frac{1}{3!}=\frac{1}{6}$$
$$a_{4}=\frac{1}{4!}=\frac{1}{24}$$
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.