# A026978 (b-file synthesized from sequence entry)
2 1
3 8
4 41
5 208
6 856
7 4540
8 18527
9 86896
10 343976
11 1794146
12 7114521
13 33019048
14 129946039
15 674164700
16 2656947487
17 12352433072
18 48571744683
19 251186392774
20 988685996629
21 4614598284024
22 18151637670487
23 93662525206528
24 368685987098199
25 1727749480803800
26 6800520785920773