# A145349 (b-file synthesized from sequence entry)
0 1
1 1
2 4
3 34
4 416
5 6319
6 111124
7 2177346
8 46440184
9 1061938195
10 25762345804
11 658072997702
12 17600573291712
13 490770914734054
14 14219015899154068
15 426904437068035200
16 13252855203929697200
17 424634035832800883743
18 14020984603588221319072
19 476460483567807053745450