# A132052 (b-file synthesized from sequence entry)
7 1
8 84
9 4662
10 220500
11 9740115
12 419625360
13 18048090060
14 785470565880
15 34872721208325
16 1587323312675100
17 74301594199682850
18 3583275362669702700
19 178220792065162821975
20 9146316814629741747000
21 484394828691800237211000