# A193317 (b-file synthesized from sequence entry)
0 0
1 0
2 1
3 18
4 300
5 5550
6 117780
7 2873262
8 80126228
9 2534723280
10 90239747220
11 3588582531875
12 158318375911740
13 7700793136255440
14 410691133882551795
15 23894146232727414630
16 1509723335738373490800
17 103169903975944947302744
18 7597003720932150826636260
19 600748548233457344454385722