# A217777 (b-file synthesized from sequence entry)
0 1
1 2
2 4
3 8
4 15
5 30
6 55
7 110
8 200
9 400
10 725
11 1450
12 2625
13 5250
14 9500
15 19000
16 34375
17 68750
18 124375
19 248750
20 450000
21 900000
22 1628125
23 3256250
24 5890625
25 11781250
26 21312500
27 42625000
28 77109375
29 154218750
30 278984375
31 557968750
32 1009375000
33 2018750000
34 3651953125