# A028549 (b-file synthesized from sequence entry)
0 1
1 0
2 0
3 5192
4 85987
5 898480
6 6791048
7 41648904
8 218476203
9 1016380464
10 4290665368
11 16714067968
12 60822086204
13 208730040992
14 680578153640
15 2120990121096
16 6348782759231
17 18327348645584
18 51197825318992
19 138806809095064
20 366154573652582
21 941793034051584