# A124501 (b-file synthesized from sequence entry)
0 1
1 1
2 2
3 4
4 10
5 25
6 68
7 186
8 522
9 1479
10 4246
11 12289
12 35872
13 105411
14 311662
15 926270
16 2765778
17 8292296
18 24953437
19 75338686
20 228140842
21 692733127
22 2108652750
23 6433255041
24 19668210742
25 60247367313
26 184879648441
27 568281131800