# A153935 (b-file synthesized from sequence entry)
0 1
1 2
2 2
3 3
4 8
5 6
6 19
7 86
8 201
9 747
10 4737
11 13222
12 67580
13 644447
14 2591663
15 18812351
16 265019022
17 1467585490
18 15658902928
19 326360337439