# A053725 (b-file synthesized from sequence entry)
1 1
2 3
3 57
4 1233
5 75393
6 19109889
7 6326835201
8 6388287561729
9 23576681450405889
10 120906321631678693377
11 1968421511613895105052673
12 111055505036706392268074909697
13 8965464105556083354144035638870017