# A319104 (b-file synthesized from sequence entry)
0 1
1 1
2 2
3 6
4 30
5 150
6 900
7 6300
8 56700
9 550620
10 5506200
11 60568200
12 782951400
13 10351341000
14 144918774000
15 2173781610000
16 38080340298000
17 653540914026000
18 12158944705908000
19 231019949412252000
20 4855314209005260000
21 102626845031971260000
22 2275136280946849320000
23 52328134461777534360000