# A148919 (b-file synthesized from sequence entry)
0 1
1 1
2 3
3 8
4 36
5 115
6 529
7 1895
8 8855
9 33729
10 160727
11 637268
12 3069226
13 12527125
14 60683485
15 253007532
16 1231455946
17 5218227906
18 25498514854
19 109450738571
20 536404268553
21 2326770285360
22 11429406175510
23 50009101642780
24 246121050775180
25 1084761675664592
26 5347280346046416
27 23714434855529478