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A158500 as a simple table

na(n)
01
11
21
3-4
415
5-56
6210
7-792
83003
9-11440
1043758
11-167960
12646646
13-2496144
149657700
15-37442160
16145422675
17-565722720
182203961430
19-8597496600
2033578000610
21-131282408400
22513791607420
23-2012616400080

[1,1,1,-4,15,-56,210,-792,3003,-11440,43758,
 -167960,646646,-2496144,9657700,-37442160,
 145422675,-565722720,2203961430,-8597496600,
 33578000610,-131282408400,513791607420,
 -2012616400080]