# A061774 (b-file synthesized from sequence entry)
1 1
2 1
3 2
4 6
5 24
6 720
7 5040
8 40320
9 3628800
10 479001600
11 1307674368000
12 20922789888000
13 6402373705728000
14 1124000727777607680000
15 620448401733239439360000
16 403291461126605635584000000
17 304888344611713860501504000000
18 265252859812191058636308480000000
19 8222838654177922817725562880000000