# A086952 (b-file synthesized from sequence entry)
0 0
1 1
2 16
3 144
4 1024
5 6400
6 36864
7 200704
8 1048576
9 5308416
10 26214400
11 126877696
12 603979776
13 2835349504
14 13153337344
15 60397977600
16 274877906944
17 1241245548544
18 5566277615616
19 24807731101696
20 109951162777600
21 484884627849216
22 2128654511374336
23 9306266417496064
24 40532396646334464