# A016218 (b-file synthesized from sequence entry)
0 1
1 10
2 71
3 440
4 2541
5 14070
6 75811
7 400900
8 2091881
9 10808930
10 55442751
11 282806160
12 1436400421
13 7271480590
14 36715316891
15 185008240220
16 930767824161
17 4676745613050
18 23475354034231
19 117743274047080
20 590182385739101
21 2956775990710310
22 14807336201610771