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A012353 as a simple table

na(n)
00
10
22
3-3
416
5-50
6440
7-2856
830896
9-291528
103760768
11-47794120
12742773920
13-11810509776
14214335913584
15-4059112319640
1684773616869376
17-1860974227719872
1844081861972926464
19-1097880401356246656
2029109695232734355712
21-810074412297240074880

[0,0,2,-3,16,-50,440,-2856,30896,-291528,3760768,
 -47794120,742773920,-11810509776,214335913584,
 -4059112319640,84773616869376,-1860974227719872,
 44081861972926464,-1097880401356246656,
 29109695232734355712,-810074412297240074880]