# A174315 (b-file synthesized from sequence entry)
2 1
3 7
4 97
5 2221
6 75721
7 3591211
8 225827617
9 18168156217
10 1819029079441
11 221716249326991
12 32313176619313921
13 5547478498197397477
14 1107802527495396486937
15 254557467773494382397811