# A027039 (b-file synthesized from sequence entry)
0 1
1 1
2 3
3 5
4 13
5 33
6 85
7 221
8 597
9 1655
10 4593
11 12775
12 35629
13 99651
14 279501
15 786071
16 2252509
17 6460433
18 18542169
19 53260481
20 153115765
21 440572993
22 1268830877
23 3657435745
24 10551936125
25 30469329025
26 88056216233
27 256521698097