# A112320 (b-file synthesized from sequence entry)
1 1
2 3
3 12
4 70
5 560
6 5810
7 74760
8 1153740
9 20817588
10 430604724
11 10052947476
12 261595087182
13 7509722346204
14 235808741944100
15 8040824716606176
16 295914258931377276
17 11690732617035570008
18 493527339623630078552