$a_{n+1}=4a_n+n+1$ Find Closed Form
132879
Matlab questions about $a_{n+1} = 4a_{n} + n +1$
135212
The square of an integer has form $3n$ or $3n+1$
34059
$(a^{2^n}+1,a^{2^m}+1)=1 or 2$
121554
Finding $\sum\frac{1}{2^n(n+1)}$
48200
Simplify $\sum_{i=0}^n (i+1)\binom ni$
47753
Closed form of series with factorial-squared denominator?
110262
Finding a closed formula for $1\cdot2\cdot3\cdots k +\dots + n(n+1)(n+2)\cdots(k+n-1)$
144260
Solve recurrence relation $a_n = 3 a_{n - 3} + a_{n-1} + 2 n$
129801
Finding a closed form for $\sum^{n}_{k=1} \frac{k}{(k+1)!} $
58972
Proof/Derivation of Closed form of Binomial Expression $\sum\limits_{k=0}^{2n}(-1)^k\binom{2n}{k}^2$
34025
Limit of the Sequence: $a_{n+1}=a_n+\frac{1}{a_n}$ with $a_1=1$
39909
Getting a closed form from $\sum_{i=1}^{n-1} \sum_{j=i+1}^{n} \sum_{k=1}^{j} 1$
89705
How to solve $a_n = 2a_{n-1} + 1, a_0 = 0, a_1 = 1$?
124782
Hint for $(n!+1,(n+1)!)$, stuck at $ (n!+1,n+1)$
119606
Closed form of summation
22093
How to show $a^{2^n}+1 \mid a^{2^m}-1$?
102490
Does this recursive sequence have a closed-form?