# A148593 (b-file synthesized from sequence entry)
0 1
1 1
2 3
3 6
4 20
5 57
6 194
7 650
8 2287
9 8247
10 30240
11 113165
12 429076
13 1647654
14 6395755
15 25060015
16 98980363
17 393905643
18 1577464918
19 6354456606
20 25732494494
21 104690838017
22 427789036689
23 1754877559797
24 7224755292423
25 29843212323269
26 123647788677744
27 513754501188089
28 2140248310019905