# A027489 (b-file synthesized from sequence entry)
1 1
2 7
3 176
4 10746
5 1297704
6 272866980
7 91570835040
8 46034917019280
9 33038572997888640
10 32591683412232799680
11 42861143959833044563200
12 73273310483627217731644800
13 159431451667479363623304936960