# A091485 (b-file synthesized from sequence entry)
1 1
2 1
3 4
4 28
5 290
6 3996
7 68992
8 1434112
9 34895772
10 973450000
11 30636233936
12 1074020373504
13 41510792057176
14 1753764940408768
15 80412829785000000
16 3977094146761424896
17 211058327532167398928
18 11963018212810373415168
19 721321146876339731628352