# A271272 (b-file synthesized from sequence entry)
0 1
1 1
2 2
3 5
4 13
5 36
6 110
7 374
8 1404
9 5750
10 25419
11 120325
12 606210
13 3234618
14 18202851
15 107647893
16 666903189
17 4316424771
18 29116689197
19 204259773724
20 1487336089532
21 11221857590608
22 87591879539120
23 706286859093554
24 5875489876724901
25 50364717424939105
26 444367708336858660