Combinations with a certain number of symbol repetitions
71759
How many different permutations are there of the sequence of letters in "MISSISSIPPI"?
85083
Combining arrow symbols in text
96344
Combination with repetitions.
142477
Closed-form expression for the number of $k$-permutations of length $n$. Duplicates allowed!
8645
A formula for bit strings with no $k$ consecutive $1$'s using generating functions
17580
Combinatorics That Looks Similar to Vandermonde's Identity
38037
A problem with my reasoning in a problem about combinations
93459
Number of permutations of unspecified length
31918
How do you create an alternating series with the sign being the same twice in a row?
95647
How do I repeat a character n times in a string?
112188
Duplicate Permutations with Tuples
49912
Generating ordered combination of numbers
155605
Find combinations in arrays
1405
Arrangements of a,a,a,b,b,b,c,c,c in which no three consecutive letters are the same
107027
Number of combinations and permutations of letters
26619
Permutations of word 'mathematics'
153692
Generating and solving recurrence relations