# A019228 (b-file synthesized from sequence entry)
3 0
4 2
5 3
6 2
7 21
8 30
9 56
10 118
11 231
12 547
13 1190
14 2879
15 6620
16 16329
17 40851
18 102478
19 265648
20 682480
21 1763038
22 4578168
23 11855495
24 30829307
25 80371950
26 209352239
27 547126557
28 1432797726
29 3757007598
30 9877429162
31 26009873890