# A004359 (b-file synthesized from sequence entry)
4 1
5 30
6 630
7 11480
8 194580
9 3162510
10 50063860
11 778789440
12 11969016345
13 182364632450
14 2761025887620
15 41604694413840
16 624668654531480
17 9353014406656200
18 139737927523546800
19 2084196562669889040