# A061348 (b-file synthesized from sequence entry)
1 2
2 4
3 20
4 208
5 5728
6 351616
7 44772352
8 11453771776
9 5864078802944
10 6004800040206336
11 12297829416834170880
12 50371909152808594571264
13 412646679762074900658913280
14 6760803201217259503457555972096
15 221537999297485988040673580072042496