# A261547 (b-file synthesized from sequence entry)
0 1
1 1
2 4
3 13
4 40
5 121
6 364
7 1093
8 3280
9 9841
10 29524
11 88573
12 265720
13 797161
14 2391484
15 7174453
16 21523360
17 64570081
18 193710244
19 581130733
20 1743392200
21 5230176601
22 15690529804
23 47071589413
24 141214768240
25 423644304721
26 1270932914164