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A012194 as a simple table

na(n)
01
11
21
30
4-3
54
669
7136
8-1159
91744
10115081
11652864
12-3250827
1316365504
141156388557
1512624963456
16-12628752143
17910310355200
1842394317198097
19735663001262080
202830775181039853
21125940707707991040

[1,1,1,0,-3,4,69,136,-1159,1744,115081,652864,
 -3250827,16365504,1156388557,12624963456,
 -12628752143,910310355200,42394317198097,
 735663001262080,2830775181039853,
 125940707707991040]