How to find a closed form of this simple factorial sequence
7302
$\sum k! = 1! +2! +3! + \cdots + n!$ ,is there a generic formula for this?
146305
Simplify sum of factorials with mathematical induction
63314
Triangular Factorials
139307
Closed form expression for infinite series
151160
Multiple choice question about generating function of a sequence
128608
Closed form for the series $a+a^p+(a^p)^p+\dots$
49741
Finding a closed form for a recurrence relation $a_n=3a_{n-1}+4a_{n-2}$
35091
How can I prove this sequence is decreasing?
117758
Number of zeroes at end of factorial
38871
How to obtain the complete factorization of $P_n(X)=\frac{(X+i)^{2n+1} - (X-i)^{2n+1}}{2i} = 0$
140462
Find a closed form for the power series $f_p(x)=\sum\limits_{n=0}^\infty\frac{n^p}{n!}x^n$
84121
Double factorial series
81052
Determining a limit of parametrized, recursively defined sequence $a_{n+1}=1+\frac{(a_n-1)^2}{17}$
72223
Last non Zero digit of a Factorial
125981
Closed-Form Solution to Infinite Sum
54296
How can I write Mathematica code for this continued fraction with alternating terms?
133070
Finding a closed form expression for the recurrence relation $a(n,k+1)=(k+1)^n+\sum_{m=1}^k {k+1\choose m}a(n,m)$