# A278993 (b-file synthesized from sequence entry)
1 0
2 1
3 1
4 4
5 21
6 176
7 1893
8 25030
9 382272
10 6604535
11 127222636
12 2702798537
13 62778105236
14 1582725739329
15 43046433007765
16 1256332883208474
17 39165907107963273
18 1298945495674093932
19 45666536827274985585
20 1696460750775267473762