# A039765 (b-file synthesized from sequence entry)
0 0
1 0
2 4
3 31
4 240
5 1931
6 16396
7 147589
8 1408224
9 14214559
10 151394940
11 1696783221
12 19958826080
13 245788962199
14 3161635135340
15 42390110260685
16 591257152058944
17 8563898444592927
18 128598641049231996