# A321181 (b-file synthesized from sequence entry)
0 1
1 1
2 2
3 7
4 28
5 262
6 3428
7 52289
8 1147221
9 30161625
10 893291633
11 30894822277
12 1214415301634
13 52617692115135
14 2528123847871538
15 133088227043557512
16 7574733515354756765
17 466116310963215784930
18 30810712157925101729430
19 2173319693639115252360852
20 163247410881483617710298406