# A210448 (b-file synthesized from sequence entry)
0 0
1 3
2 15
3 57
4 195
5 633
6 1995
7 6177
8 18915
9 57513
10 174075
11 525297
12 1582035
13 4758393
14 14299755
15 42948417
16 128943555
17 387027273
18 1161475035
19 3485211537
20 10457207475
21 31374768153
22 94130595915
23 282404370657
24 847238277795
25 2541765165033
26 7625396158395
27 22876389801777
28 68629572058515