# A028544 (b-file synthesized from sequence entry)
0 1
1 0
2 0
3 6487
4 58422
5 569829
6 3352323
7 18437679
8 82994106
9 348339797
10 1310464389
11 4650749220
12 15379052975
13 48512285916
14 145469679888
15 419752300006
16 1165090913961
17 3132596831559
18 8164711662419
19 20718093427629
20 51236693043471
21 123846409657100
22 292897534403136