# A027148 (b-file synthesized from sequence entry)
1 1
2 6
3 20
4 152
5 528
6 4416
7 15488
8 135552
9 477440
10 4289536
11 15144960
12 138407936
13 489431040
14 4526702592
15 16024403968
16 149528084480
17 529747476480
18 4977103994880
19 17643662213120
20 166668216041472
21 591119702294528
22 5608619676532736