# A131726 (b-file synthesized from sequence entry)
0 0
1 0
2 0
3 0
4 10
5 20
6 70
7 160
8 400
9 980
10 2370
11 5740
12 13860
13 33460
14 80780
15 195020
16 470830
17 1136680
18 2744210
19 6625100
20 15994420
21 38613960