# A028541 (b-file synthesized from sequence entry)
0 1
1 0
2 0
3 7176
4 36405
5 451152
6 1850520
7 11430360
8 40829508
9 180254320
10 578006136
11 2083510440
12 6126245505
13 19249667568
14 52694220240
15 149784377808
16 386132988195
17 1016209016640
18 2489040955848
19 6159593155680
20 14435004725811
21 33958887040560
22 76572044994960