# A069046 (b-file synthesized from sequence entry)
1 1
2 4
3 36
4 144
5 3600
6 3600
7 176400
8 705600
9 6350400
10 31752000
11 3841992000
12 3841992000
13 649296648000
14 649296648000
15 129859329600
16 519437318400
17 150117385017600
18 150117385017600
19 54192375991353600
20 270961879956768000