# A087902 (b-file synthesized from sequence entry)
2 2
3 4
4 6
5 12
6 36
7 60
8 180
9 900
10 1260
11 6300
12 44100
13 69300
14 485100
15 5336100
16 6306300
17 69369300
18 901800900
19 1179278100
20 15330615300
21 260620460100
22 291281690700
23 4951788741900
24 94083986096100
25 113891141063700
26 2163931680210300