login

A290178 as a simple table

na(n)
21
3192
4-8280
5147200
6-1438020
77491456
8-4626880
9-246965760
102112385950
11-9443825600
1223625035616
13-14413771008
14-118710609640
15427914230400
16-467038103040
17-645319017984
181640006523477
192800373100480
20-8506579320400
21-21655683517440
22108181106829972

[1,192,-8280,147200,-1438020,7491456,-4626880,
 -246965760,2112385950,-9443825600,23625035616,
 -14413771008,-118710609640,427914230400,
 -467038103040,-645319017984,1640006523477,
 2800373100480,-8506579320400,-21655683517440,
 108181106829972]