# A150558 (b-file synthesized from sequence entry)
0 1
1 2
2 7
3 26
4 106
5 438
6 1886
7 8208
8 36645
9 164838
10 749978
11 3436717
12 15865958
13 73717234
14 344237449
15 1614232355
16 7599086216
17 35897479082
18 170135432788
19 808558437606
20 3851956705719
21 18391549249968
22 87996068206656
23 421846643489797
24 2025805986376666
25 9743584249035559
26 46932362767850800
27 226373652767896536