# A135904 (b-file synthesized from sequence entry)
0 1
1 2
2 8
3 47
4 356
5 3252
6 34448
7 412546
8 5488222
9 80066096
10 1268400628
11 21651578958
12 395749634342
13 7705289481276
14 159106051976460
15 3471184678351602
16 79751883928130922
17 1924103020594546192
18 48622055377338993264