# A186185 (b-file synthesized from sequence entry)
0 1
1 1
2 3
3 11
4 48
5 239
6 1306
7 7612
8 46436
9 292875
10 1894365
11 12496864
12 83753165
13 568628232
14 3902600850
15 27031069848
16 188709211952
17 1326456525471
18 9379857716098
19 66680723764051
20 476269444919163
21 3416178576731504