# A086881 (b-file synthesized from sequence entry)
1 1
2 34
3 1788
4 146256
5 17485920
6 2894002560
7 635331029760
8 178910029670400
9 62920533840998400
10 27042268338763776000
11 13950701922125574144000
12 8509745665997194493952000
13 6059691013778107566981120000