# A351825 (b-file synthesized from sequence entry)
0 0
1 0
2 2
3 6
4 36
5 260
6 2190
7 21042
8 226856
9 2709576
10 35491770
11 505620830
12 7780224012
13 128555409996
14 2269569526406
15 42625044254730
16 848404205856720
17 17836074466842512
18 394872870912995826
19 9181542826326252726
20 223680717959853460340
21 5697036951307194432660
22 151396442683371572351742