Red square and circle by some songs
133869
Why can't I play songs downloaded on iOS 7?
79677
Difference of squares - number of representations
4747
arrangement of $n$ oranges and $n$ apples around a circle
100939
Circle with two borders
135069
What's this music used when Lelouch is giving new orders in ep. 2 of R2?
24468
Apple Loops Copyright
82458
Homeomorphism between the unit disc and the unit square
82798
A pattern involving Times
134722
Intersection of straight line and circle
36883
How many different ways of putting circles on $OX$.
103714
Progressively filled circles
149770
Connect a circle and a line together
65335
A "binomial" generalization of harmonic numbers
44811
Intersection of Common Chords of Three Circles
140372
Mixing rounded corners and square corners
91560
Square Fibonacci numbers
26180
Identify this symbol: two circles overlapping