# A050185 (b-file synthesized from sequence entry)
0 0
1 1
2 5
3 22
4 91
5 364
6 1428
7 5537
8 21318
9 81719
10 312455
11 1193010
12 4552275
13 17368680
14 66284554
15 253086480
16 966955410
17 3697182450
18 14147884842
19 54185826156
20 207712333598
21 796937116661
22 3060338457400
23 11762344331920