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A013380 as a simple table

n a(n)
0 1
1 -15
2 271
3 -8215
4 423091
5 -35126715
6 4192844111
7 -652228720015
8 125163350892331
9 -28804173376146115
10 7819440342923915751
11 -2475114876516159269015
12 904874211609774006906371
13 -378873316356391869172808715
14 180284311084647508248207800191
15 -96800336889159425029828580541215

[1,-15,271,-8215,423091,-35126715,4192844111,
 -652228720015,125163350892331,-28804173376146115,
 7819440342923915751,-2475114876516159269015,
 904874211609774006906371,
 -378873316356391869172808715,
 180284311084647508248207800191,
 -96800336889159425029828580541215]

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Last modified July 2 16:09 EDT 2022. Contains 355029 sequences. (Running on oeis4.)