Posted by **Lee** on Tuesday, October 25, 2011 at 10:08pm.

I can't figure out this pattern: 1, 1, 4, 3, 9, 6, 16, 10, 25, 15, __, __, __, __

- Math -
**Alyssa**, Tuesday, October 25, 2011 at 11:09pm
I think this may be right.

1,1,4,3,9,6,16,10,25,15,36,21,49,28,64,36,etc

1+2=3

3+3=6

6+4=10

10+5=15

15+6=21

21+7=28

28+8=36

- Math -
**Steve**, Wednesday, October 26, 2011 at 1:07pm
Looks good to me. Alternating square numbers and triangular numbers.

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