# A099432 (b-file synthesized from sequence entry)
0 1
1 6
2 33
3 162
4 756
5 3402
6 14931
7 64314
8 273051
9 1145988
10 4764744
11 19656756
12 80561061
13 328316814
14 1331513397
15 5377120038
16 21633427836
17 86747114430
18 346810621815
19 1382826606210
20 5500378861551
21 21830478128136
22 86469557676048