# A055861 (b-file synthesized from sequence entry)
0 0
1 0
2 6
3 48
4 500
5 6480
6 100842
7 1835008
8 38263752
9 900000000
10 23579476910
11 681091006464
12 21505924728444
13 737020860878848
14 27246730957031250
15 1080863910568919040
16 45798768824157052688
17 2064472028642102280192