# A211284 (b-file synthesized from sequence entry)
0 1
1 3
2 9
3 25
4 70
5 197
6 554
7 1563
8 4416
9 12502
10 35463
11 100783
12 286965
13 818614
14 2339534
15 6698297
16 19211785
17 55197778
18 158857016
19 457932482
20 1322162806
21 3823263357
22 11071998176
23 32109724225
24 93248516464
25 271155229971
26 789479244108
27 2301369264646
28 6716318395056
29 19622420290276
30 57388871934035