# A032213 (b-file synthesized from sequence entry)
1 1
2 1
3 1
4 4
5 8
6 38
7 206
8 1200
9 6824
10 50912
11 547552
12 4372912
13 50243280
14 557844400
15 6991479552
16 99545556480
17 1388702331776
18 20997495005568
19 347714276937216
20 5833018374594560
21 105073644198025984