# A268815 (b-file synthesized from sequence entry)
0 1
1 1
2 0
3 0
4 1
5 1
6 5
7 19
8 76
9 360
10 1792
11 9634
12 55286
13 336396
14 2162554
15 14629720
16 103818489
17 770678553
18 5969822993
19 48148947503
20 403545713463
21 3508356996105
22 31587389832791
23 294087418038113
24 2827471212909189
25 28037001032306431
26 286398141349873925
27 3010540174760962975