# A148902 (b-file synthesized from sequence entry)
0 1
1 1
2 3
3 8
4 31
5 114
6 475
7 1987
8 8682
9 38428
10 173636
11 792939
12 3663783
13 17065149
14 80076371
15 377979137
16 1793374394
17 8545969754
18 40879106065
19 196184628494
20 944237293800
21 4556163983762
22 22034067907113
23 106772807172070
24 518329967949744
25 2520304811567726
26 12272504998264021
27 59839464232713031