# A095004 (b-file synthesized from sequence entry)
1 1
2 10
3 81
4 640
5 5041
6 39690
7 312481
8 2460160
9 19368801
10 152490250
11 1200553201
12 9451935360
13 74414929681
14 585867502090
15 4612525087041
16 36314333194240
17 285902140466881
18 2250902790540810
19 17721320183859601
20 139519658680336000
21 1098435949258828401
22 8647967935390291210