# A228833 (b-file synthesized from sequence entry)
0 1
1 1
2 2
3 3
4 5
5 20
6 77
7 437
8 5509
9 54475
10 1031232
11 31874836
12 789351469
13 47552777430
14 3302430043985
15 223753995897916
16 39177880844093733
17 5954060239110086680
18 1226026438114057710320
19 551315671593483499670137
20 188615011023291125237647365
21 124995445742889226418307452940