# A058351 (b-file synthesized from sequence entry)
0 0
1 1
2 3
3 7
4 17
5 41
6 107
7 287
8 809
9 2341
10 6965
11 21101
12 65031
13 202939
14 640441
15 2039509
16 6546861
17 21158437
18 68791923
19 224839127
20 738316629
21 2434622357
22 8058616301
23 26765349429
24 89173526191
25 297942766331
26 998072479961
27 3351459203873