# A045627 (b-file synthesized from sequence entry)
0 1
1 1
2 3
3 9
4 34
5 125
6 459
7 1715
8 6432
9 24300
10 92375
11 352715
12 1352034
13 5200299
14 20058297
15 77558625
16 300540160
17 1166803109
18 4537567188
19 17672631899
20 68923264250
21 269128935495
22 1052049481857
23 4116715363799
24 16123801834656