# A148844 (b-file synthesized from sequence entry)
0 1
1 1
2 3
3 8
4 27
5 96
6 361
7 1409
8 5650
9 23184
10 96687
11 409555
12 1754124
13 7592661
14 33139803
15 145727381
16 644928721
17 2870241308
18 12837405152
19 57669438763
20 260088377628
21 1177136924040
22 5344629210546
23 24336621999021
24 111107986827919
25 508478801070057
26 2332153406603864
27 10718196697490856
28 49351328396155123