# A353186 (b-file synthesized from sequence entry)
0 1
1 1
2 4
3 22
4 170
5 1588
6 18236
7 240840
8 3662424
9 62456136
10 1185150768
11 24714979584
12 562659843984
13 13870798275072
14 368324715871680
15 10478253239415552
16 317975367247809408
17 10252138622419702656
18 349999438215928660992
19 12612365665457524786944
20 478414908509124826439424