# A216246 (b-file synthesized from sequence entry)
0 1
1 1
2 1
3 2
4 7
5 20
6 62
7 228
8 867
9 3474
10 14864
11 67101
12 316028
13 1540782
14 7792810
15 40669011
16 218087867
17 1201778736
18 6792071574
19 39309770969
20 232718797430
21 1407837227275
22 8694994837673
23 54771751869237
24 351643945379956
25 2299330292987022
26 15302662859459784