# A090805 (b-file synthesized from sequence entry)
0 1
1 2
2 6
3 21
4 85
5 430
6 2586
7 18109
8 144880
9 1303929
10 13039300
11 143432311
12 1721187744
13 22375440685
14 313256169604
15 4698842544075
16 75181480705216
17 1278085171988689
18 23005533095796420
19 437105128820131999
20 8742102576402640000
21 183584154104455440021
22 4038851390298019680484