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Asymptotic behavior of functions, asymptotic series and related topics

3 votes

Counting certain arrangements of n triangles. Does the count grow superexponentially?

Of course, you can probably figure out precise asymptotics for $U$ from the above recurrence with a little more work, but given that it won't yield asymptotics for $T$ maybe just the upper bound is enough …
Louigi Addario-Berry's user avatar