# A006200 (b-file synthesized from sequence entry)
1 1
2 6
3 55
4 610
5 7980
6 120274
7 2052309
8 39110490
9 823324755
10 18974858540
11 475182478056
12 12848667150956
13 373081590628565
14 11578264139795430
15 382452947343624515
16 13397354334102974934
17 496082324933446766724
18 19360538560004548357830
19 794275868644522931369185