# A027231 (b-file synthesized from sequence entry)
0 1
1 2
2 6
3 26
4 91
5 424
6 1563
7 7490
8 28363
9 138154
10 532277
11 2622108
12 10229514
13 50827494
14 200236656
15 1001864238
16 3978724091
17 20024629606
18 80072228433
19 405071776024
20 1629554359654
21 8281491341260
22 33495987519034
23 170937706521070
24 694795683685757
25 3559265886170942