# A030892 (b-file synthesized from sequence entry)
1 1
2 3
3 9
4 38
5 192
6 1152
7 8068
8 64549
9 580947
10 5809475
11 63904227
12 766850734
13 9969059549
14 139566833690
15 2093502505354
16 33496040085671
17 569432681456423
18 10249788266215622
19 194745977058096830
20 3894919541161936616