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A013392 as a simple table

na(n)
01
10
20
3-90
4-3864
5-326214
6-38496876
7-6363118762
8-1391451773264
9-390207547318222
10-136581823796686036
11-58397588436566980370
12-29960029691855345080504
13-18169010205146250870789750

[1,0,0,-90,-3864,-326214,-38496876,-6363118762,
 -1391451773264,-390207547318222,
 -136581823796686036,-58397588436566980370,
 -29960029691855345080504,
 -18169010205146250870789750]