# A071554 (b-file synthesized from sequence entry)
2 4
3 16
4 106
5 1156
6 15016
7 255256
8 4849846
9 111546436
10 3234846616
11 100280245066
12 3710369067406
13 152125131763606
14 6541380665835016
15 307444891294245706
16 16294579238595022366
17 961380175077106319536
18 58644190679703485491636