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A245086 as a simple table

na(n)
01
10
2-6
30
490
50
6-1680
70
834650
90
10-756756
110
1217153136
130
14-399072960
150
169465511770
170
18-227873431500
190
205550996791340
210
22-136526995463040
230
243384731762521200
250
26-84478098072866400
270
282120572665910728000
290
30-53494979785374631680
310

[1,0,-6,0,90,0,-1680,0,34650,0,-756756,0,17153136,
 0,-399072960,0,9465511770,0,-227873431500,0,
 5550996791340,0,-136526995463040,0,
 3384731762521200,0,-84478098072866400,0,
 2120572665910728000,0,-53494979785374631680,0]