# A073618 (b-file synthesized from sequence entry)
0 1
1 1
2 1
3 2
4 3
5 12
6 30
7 60
8 210
9 840
10 1260
11 2520
12 13860
13 27720
14 180180
15 360360
16 180180
17 720720
18 6126120
19 12252240
20 116396280
21 232792560
22 116396280
23 232792560
24 2677114440
25 5354228880
26 13385572200
27 26771144400
28 40156716600
29 80313433200
30 1164544781400
31 2329089562800