# A149203 (b-file synthesized from sequence entry)
0 1
1 1
2 4
3 10
4 39
5 133
6 503
7 1903
8 7473
9 29283
10 117340
11 472735
12 1923988
13 7866991
14 32415016
15 134128943
16 557609799
17 2326658582
18 9745447103
19 40938439634
20 172464891400
21 728418140034
22 3083825574858
23 13082628817159
24 55610642800671
25 236812974175072
26 1010124338572475
27 4315286500849177