# A147918 (b-file synthesized from sequence entry)
1 1
2 2
3 6
4 24
5 96
6 376
7 2434
8 16728
9 99960
10 838244
11 7723320
12 62801352
13 674514660
14 7865976872
15 80727212972
16 1056425822904