# A032082 (b-file synthesized from sequence entry)
1 2
2 2
3 4
4 28
5 330
6 4750
7 80050
8 1559430
9 34631010
10 866193150
11 24128154570
12 741441847710
13 24926160803190
14 910288638654210
15 35889186812894250
16 1519450997661008550
17 68756119302418668000
18 3311679881316255436200