SP27234 ORDSUM23 - Sums of 2 and 3

Changu and Mangu are brothers. Changu likes 2 and Mangu likes 3. They decided to express each number as sum of 2 and 3. They need your help. They want you to tell them the number of ways of writing a number as ordered sums of 2 and/or 3. For example, there are 4 ways to write 8 as an ordered sum of 2s and/or 3s: 2 + 2 + 2 + 2 2 + 3 + 3 3 + 2 + 3 3 + 3 + 2

N/A

N/A