What is the number of C4, 4+C4, 5+C4, 6+C4, 7+C4, 8+C4, 9 (the number before the comma is above and the number after the comma is below)?
Here, the formula Cm, n+ 1=Cm, n+Cm- 1, n is enough.
Original formula =C5, 5+C4, 5+C4, 6+C4, 7+C4, 8+C4, 9
=C5，6+C4，6+C4，7+C4，8+C4，9
=C5，7+C4，7+C4，8+C4，9
=C5，8+C4，8+C4，9
=C5，9+C4，9
=C5， 10
=252