# A176497 (b-file synthesized from sequence entry)
1 0
2 0
3 0
4 1
5 4
6 9
7 25
8 75
9 195
10 475
11 1265
12 3135
13 7983
14 19697
15 50003
16 126163
17 317629
18 802945
19 2035619
20 5158039
21 13084381
22 33240845
23 84478199
24 214717585
25 546235003