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A013458 as a simple table

na(n)
01
10
20
30
40
5-8064
6-2838528
7-863070208
8-280413765632
9-103486230003712
10-44246647746887680
11-22012763373859241984
12-12714213783118211448832
13-8481868824110022304727040
14-6494340221977598984831631360

[1,0,0,0,0,-8064,-2838528,-863070208,
 -280413765632,-103486230003712,-44246647746887680,
 -22012763373859241984,-12714213783118211448832,
 -8481868824110022304727040,
 -6494340221977598984831631360]