# A220874 (b-file synthesized from sequence entry)
0 1
1 2
2 6
3 20
4 64
5 194
6 562
7 1570
8 4258
9 11266
10 29186
11 74242
12 185858
13 458754
14 1118210
15 2695170
16 6430722
17 15204354
18 35651586
19 82968578
20 191758338
21 440401922
22 1005584386
23 2283798530
24 5161091074
25 11609833474
26 26004684802
27 58015612930
28 128949682178