# A116447 (b-file synthesized from sequence entry)
0 0
1 1
2 1
3 1
4 2
5 2
6 3
7 6
8 4
9 24
10 5
11 120
12 6
13 720
14 7
15 5040
16 8
17 40320
18 9
19 362880
20 10
21 3628800
22 11
23 39916800
24 12
25 479001600
26 13
27 6227020800
28 14
29 87178291200
30 15
31 1307674368000
32 16
33 20922789888000
34 17
35 355687428096000
36 18
37 6402373705728000
38 19
39 121645100408832000