login

A354397 as a simple table

na(n)
01
10
20
30
4-1
5-10
6-65
7-350
8-1666
9-6510
10-7855
11270050
124948669
1363503440
14702095030
156924754200
1658870214129
17356043924590
18-615569993285
19-74306502570650
20-1783956267419536
21-32695418069393310
22-520090808927130925
23-7317310078355307250
24-87056749651694635451

[1,0,0,0,-1,-10,-65,-350,-1666,-6510,-7855,270050,
 4948669,63503440,702095030,6924754200,58870214129,
 356043924590,-615569993285,-74306502570650,
 -1783956267419536,-32695418069393310,
 -520090808927130925,-7317310078355307250,
 -87056749651694635451]