# A145844 (b-file synthesized from sequence entry)
0 1
1 2
2 8
3 46
4 332
5 2784
6 25888
7 259382
8 2749244
9 30449416
10 349379648
11 4127103776
12 49954287424
13 617299996928
14 7765434294912
15 99214734136966
16 1285011754097372
17 16845342401817048
18 223216584359771296
19 2986529546579794040
20 40308007404730514096
21 548337251596355725312