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A298733 as a simple table

na(n)
01
10
23
3-2
49
5-6
621
7-18
848
9-44
1099
11-102
12204
13-216
14393
15-438
16747
17-846
181362
19-1584
202448
21-2872
224275
23-5082
247356
25-8784
2612390
27-14894
2820592
29-24798
3033651
31-40644
3254336
33-65640
3486535
35-104628
36136356
37-164736
38212388
39-256498
40327690
41-395214

[1,0,3,-2,9,-6,21,-18,48,-44,99,-102,204,-216,393,
 -438,747,-846,1362,-1584,2448,-2872,4275,-5082,
 7356,-8784,12390,-14894,20592,-24798,33651,-40644,
 54336,-65640,86535,-104628,136356,-164736,212388,
 -256498,327690,-395214]