# A357594 (b-file synthesized from sequence entry)
0 0
1 0
2 1
3 3
4 12
5 60
6 362
7 2562
8 20820
9 191088
10 1955020
11 22061380
12 272197160
13 3645227040
14 52656804440
15 816114251400
16 13508168448400
17 237805776169600
18 4436759277524400
19 87445191383773200
20 1815460566861236000
21 39600109151685600000
22 905416958295793788000