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A002983 as a simple table

na(n)
01
11
22
3-3
4-92
5-1015
6-8274
7-35483
8496280
918127377
10344895130
114427896781
1215653147412
13-1300426685831
14-53961316375498
15-1345994948213355
16-20836853905979984
1760576513730122017
1819579099820703961266
19894668319876527296669
2026059066415716831363820

[1,1,2,-3,-92,-1015,-8274,-35483,496280,18127377,
 344895130,4427896781,15653147412,-1300426685831,
 -53961316375498,-1345994948213355,
 -20836853905979984,60576513730122017,
 19579099820703961266,894668319876527296669,
 26059066415716831363820]