$$\sum_{a}^{b}{C}$$ 529
225
765
12
104
85
563
765
220
1348
2
8
1037
151
318
12
8
12
24
394
24
4
9
156
2
53
257
24
62
162
920
66
137
990
765
Mathbot Says...
I wasn't able to parse your question, but the HE.NET team is hard at work making me smarter.
$$\sum_{a}^{b}{C}$$ 529
225
765
12
104
85
563
765
220
1348
2
8
1037
151
318
12
8
12
24
394
24
4
9
156
2
53
257
24
62
162
920
66
137
990
765
I wasn't able to parse your question, but the HE.NET team is hard at work making me smarter.