Next letter

What are the next letters in the sequence: O T T F F S S E?

Help

Hint

The next letter is N

Answer

<private>N T E T T ...</private>

Solution

<private>The letters in the sequence are the initials of the natural numbers: One, Two, Three, etc. So the sequence continues: N T E T T F F S S E N T.</private>

Test

Testing without template