# A025266 (b-file synthesized from sequence entry)
1 1
2 1
3 0
4 1
5 2
6 6
7 16
8 45
9 126
10 358
11 1024
12 2954
13 8580
14 25084
15 73760
16 218045
17 647670
18 1932230
19 5787520
20 17398270
21 52476700
22 158765300
23 481690080
24 1465239250
25 4467799212
26 13653601116
27 41812009216
28 128290240180
29 394338641416
30 1214165174712