# A254664 (b-file synthesized from sequence entry)
0 1
1 9
2 75
3 627
4 5241
5 43809
6 366195
7 3060987
8 25586481
9 213874809
10 1787757915
11 14943687747
12 124912775721
13 1044133269009
14 8727804479235
15 72954835640907
16 609822098564961
17 5097441295442409
18 42608996659234155
19 356164297160200467