# A337015 (b-file synthesized from sequence entry)
1 1
2 1
3 2
4 9
5 20
6 279
7 512
8 19087
9 71602
10 636365
11 1517042
12 321965982
13 240609602
14 8809543877
15 144729615032
16 26818608209252
17 6603755558402
18 2737593592637477