>>> binomialp(6,2)
15
>>> binomial(6)
[1, 6, 15, 20, 15, 6, 1]
>>> for i in range(6):
	binomial(i)
[1]
[1, 1]
[1, 2, 1]
[1, 3, 3, 1]
[1, 4, 6, 4, 1]
[1, 5, 10, 10, 5, 1]