# A275488 (b-file synthesized from sequence entry)
1 1
2 1
3 3
4 12
5 80
6 810
7 10857
8 174944
9 3243060
10 67859010
11 1586109305
12 41085509652
13 1170954002946
14 36469499267474
15 1233416773419495
16 45037748851872240
17 1766375778253548392
18 74067278799492363330
19 3306928891056821667045
20 156635771633727023132300