What is the next number in this sequence: 2, 5, 9, 14,...
20. (2+3=5; 5+4=9; 9+5=14; 14+6=20; and so on.)
One fine day in the middle of the night
Two dead men got up to fight
Back to back they faced each other
Drew their swords and shot each other!
What is wrong with this?