# A152554 (b-file synthesized from sequence entry)
0 1
1 1
2 3
3 16
4 180
5 2640
6 52934
7 1307556
8 39067428
9 1369499060
10 54995284784
11 2507211396061
12 127388480252917
13 7144814127814222
14 439553511977812220
15 29347225935730588372
16 2116793087420823777580
17 164035715631344596393196