Is there a closed form of the sequence 1, 1, -1, -1, 1, 1, -1, -1, ...?
31918
How do you create an alternating series with the sign being the same twice in a row?
29138
If $\{x_n\}$ satisfies that $x_{n+1} - x_n$ goes to $0$, is $\{x_n\}$ a Cauchy sequence?
107311
Convergence of a sequence and some of its subsequences
70390
is there a closed form expression for the following matrix infinite series
79640
Function of a sequence of numbers
110441
Closed form for a formula with a summation over $i\binom{n-i}{k-1}$, and combinatorial proof?
12031
Asymptotic behavior of the sequence $a_n=\sqrt{n+a_{n-1}}$
86205
Evaluating the limit of a sequence given by recurrence relation $a_1=\sqrt2$, $a_{n+1}=\sqrt{2+a_n}$. Is my solution correct?
112589
Does this function sequence have a convergent subsequence?
144772
Is there a recurrence relation which has no closed formula?
14559
Binomial[-1,-1]
49982
Closed expression for infinite series
80748
Question regarding the Fibonacci sequence
19914
Closed form for $\sum_{n=0}^{\infty} \binom{n+k}{k} x^n$ (Negative Binomial Theorem)
50827
How to write the Fibonacci Sequence?
23726
A closed form for $1^{2}-2^{2}+3^{2}-4^{2}+ \cdots + (-1)^{n-1}n^{2}$
90074
Show that the sequence $1,2,3,4,5,6,7,8,9,1,0,1,1,1,2,1,3,1,4,1,5,1,6,1,7,1,8,1,9,2,0,2,1,\cdots$ isn't periodic