# A196192 (b-file synthesized from sequence entry)
0 1
1 1
2 4
3 16
4 77
5 389
6 2128
7 12019
8 70185
9 418788
10 2544938
11 15687842
12 97871618
13 616729500
14 3919686231
15 25096525793
16 161723865118
17 1048085548563
18 6826585371618
19 44664343473618
20 293407529533947
21 1934484748893113
22 12796683165889635
23 84906535878961845