Enter the number of hands: 10000000
Enter the number of cards per hand: 2
Here are the results in numeric form:
 0: 0
 1: 0
 2: 58974
 3: 118347
 4: 177615
 5: 236901
 6: 296308
 7: 355506
 8: 413246
 9: 474351
10: 532135
11: 947406
12: 887677
13: 824964
14: 768836
15: 709174
16: 651542
17: 592861
18: 532916
19: 473776
20: 947465
Here are the results as a histogram:
 0:
 1:
 2:
 3:*
 4:*
 5:**
 6:**
 7:**
 8:***
 9:***
10:****
11:*******
12:******
13:******
14:*****
15:*****
16:*****
17:****
18:****
19:***
20:*******