# A287807 (b-file synthesized from sequence entry)
0 1
1 6
2 28
3 132
4 624
5 2952
6 13968
7 66096
8 312768
9 1480032
10 7003584
11 33141312
12 156826368
13 742110336
14 3511703808
15 16617560832
16 78635142144
17 372105487872
18 1760822074368
19 8332299518976
20 39428864667648
21 186579390892032
22 882903157346304
23 4177942598725632