# A149307 (b-file synthesized from sequence entry)
0 1
1 1
2 4
3 11
4 48
5 158
6 716
7 2573
8 12062
9 45986
10 217794
11 859062
12 4122214
13 16719152
14 80603908
15 333063447
16 1616114454
17 6786750602
18 33020872398
19 140310630492
20 685241305096
21 2942592127670
22 14396581502884
23 62328036927798
24 305671667504844
25 1333257556909248
26 6546913161612528
27 28727562533188744