What math people don't want you to know

n=5 n=10 n=20 n=50 n=100
01-945-165495-12873003-643512870-24310
01-836-120330-7921716-34326435-11440
01-728-84210-462924-17163003-5005
01-621-56126-252462-7921287-2002
01-515-3570-126210-330495-715
01-410-2035-5684-120165-220
01-36-1015-2128-3645-55
01-23-45-67-89-10
01-11-11-11-11-1
01000000000
01100000000
01210000000
01331000000
01464100000
0151010510000
01615201561000
017213535217100
0182856705628810
0193684126126843691