# A236580 (b-file synthesized from sequence entry)
0 1
1 4
2 25
3 154
4 943
5 5773
6 35344
7 216388
8 1324801
9 8110882
10 49657576
11 304020556
12 1861317163
13 11395616227
14 69767835259
15 427142397547
16 2615110919020
17 16010597772667
18 98022320649478
19 600125959188877
20 3674175070596919
21 22494548423870416
22 137719270059617428