By increments of 1:

n	p(n)
0	0.923
1	0.894
2	0.869
3	0.842
4	0.816
5	0.788
6	0.763
7	0.725
8	0.683
9	0.636
10	0.594
11	0.557
12	0.521
13	0.487
14	0.454
15	0.423
16	0.394
17	0.366
18	0.340
19	0.318
20	0.296



By increments of 5:

n	p(n)
0	0.923
5	0.788
10	0.594
15	0.423
20	0.296
25	0.217
30	0.172
35	0.140
40	0.115
45	0.093
50	0.075
55	0.062
60	0.052
65	0.043
70	0.034