# A027490 (b-file synthesized from sequence entry)
2 1
3 39
4 2951
5 407450
6 94128364
7 33910601508
8 18030534782364
9 13546779499777104
10 13886615636338251456
11 18871622607827176957440
12 33195072622146083265245760
13 74062306101954993414777244800