# A218308 (b-file synthesized from sequence entry)
0 1
1 3
2 42
3 1116
4 44616
5 2394288
6 161719200
7 13187258304
8 1261037553792
9 138415816348416
10 17155627044653568
11 2370099000682257408
12 361171910376568571904
13 60185513513709805350912
14 10887989148395358662270976
15 2125192867898778619536457728