# A152122 (b-file synthesized from sequence entry)
0 1
1 1
2 1
3 5
4 31
5 121
6 605
7 2911
8 13361
9 64255
10 302621
11 1428031
12 6770555
13 31965701
14 151200251
15 715034375
16 3380212751
17 15984722176
18 75579365455
19 357361263031
20 1689760311371
21 7989708622205
22 37778247366211
23 178629122366311
24 844620446404405
25 3993667315453871