# A242484 (b-file synthesized from sequence entry)
1 1
2 2
3 24
4 4320
5 4680
6 26208
7 8910720
8 17428320
9 20427264
10 91963648
11 197064960
12 8583644160
13 10200236032
14 21857648640
15 57575890944
16 57629644800
17 206166804480
18 17116004505600
19 1416963251404800
20 15338300494970880