# A183070 (b-file synthesized from sequence entry)
0 1
1 1
2 2
3 8
4 49
5 380
6 3400
7 33469
8 352763
9 3914105
10 45203847
11 539095203
12 6600723606
13 82616454685
14 1053503618516
15 13650703465841
16 179351890161617
17 2385294488375623
18 32066177447127597
19 435218601202213040