# A109245 (b-file synthesized from sequence entry)
0 1
1 1
2 5
3 15
4 54
5 193
6 708
7 2627
8 9846
9 37178
10 141223
11 539047
12 2065813
13 7943706
14 30634329
15 118433821
16 458867295
17 1781267606
18 6926405025
19 26973935420
20 105189301334
21 410707352869
22 1605379739149
23 6281519778025
24 24601184635436