# A148437 (b-file synthesized from sequence entry)
0 1
1 1
2 2
3 5
4 19
5 67
6 288
7 1151
8 5166
9 21993
10 101298
11 448645
12 2103115
13 9563057
14 45376178
15 210129929
16 1005672823
17 4718671583
18 22726455310
19 107680660715
20 521111158087
21 2487628072793
22 12083759630094
23 58023822038299
24 282697015830760
25 1363850749566431
26 6661019969496358
27 32258912674456581
28 157870992453432227