# A143559 (b-file synthesized from sequence entry)
0 1
1 1
2 12
3 72
4 1012
5 9552
6 148764
7 1609496
8 26398020
9 305821344
10 5174354988
11 62479377384
12 1079265357204
13 13399747245040
14 234917433809724
15 2975608178304696
16 52748683164797668
17 678307369324850496