4th grade
posted by tyrek .
what is the rule for the number pattern 1,2,4,7,11,16

1 + 1 = 2
2 + 2 = 4
4 + 3 = 7
What pattern do you see here? 
add n to the last term, where n is the order.
1, then add 1
2, then add 2
4, then add 3
7, then add 4
11, then add 5