# A026649 (b-file synthesized from sequence entry)
0 1
1 3
2 8
3 36
4 114
5 558
6 1856
7 9384
8 31942
9 164322
10 566928
11 2948184
12 10262004
13 53761068
14 188306112
15 991821456
16 3490234182
17 18458523378
18 65190481904
19 345875613144
20 1225052975644
21 6516499594212
22 23134851823872
23 123325174525104