# A071535 (b-file synthesized from sequence entry)
1 1
2 15
3 176
4 1680
5 13824
6 102144
7 696320
8 4460544
9 27197440
10 159318016
11 902823936
12 49754
13 93120
14 26776436736
15 141180272640
16 731218182144
17 3728300048384
18 18747532247040
19 931
20 10596009984
21 457328117678080