n+1 | ||
an= | ||
n! |
n+2 | ||
an+1= | ||
(n+1)! |
n+2 | n+1 | (n+2)n!− (n+1)(n+1)! | ||||
an+1 −an= | − | = | ||||
(n+1)! | n! | n!(n+1) |
n+2 | n+1 | n+2 | (n+1)2 | |||||
an+1−an= | − | = | − | = | ||||
(n+1)! | n! | (n+1)! | (n+1)! |
n+2−(n+1)2 | −n2−n+1 | |||
= | = | |||
(n+1)! | (n+1)! |
5^2 | 52 |
2^{10} | 210 |
a_2 | a2 |
a_{25} | a25 |
p{2} | √2 |
p{81} | √81 |
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