# A148879 (b-file synthesized from sequence entry)
0 1
1 1
2 3
3 8
4 30
5 95
6 385
7 1401
8 5815
9 22659
10 96885
11 392671
12 1710249
13 7147647
14 31498799
15 134580859
16 598984123
17 2600652988
18 11666192756
19 51299141640
20 231548223922
21 1028545822270
22 4666617519716
23 20898981088272
24 95237695053924
25 429391511451396
26 1964082138100110
27 8905342679048126
28 40866113426475180