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A290973 as a simple table

na(n)
1-2
21
32
43
54
66
76
810
98
1015
1110
1225
1312
1428
1510
1660
1716
1825
1918
20125
210
2266
2322
24218
2524
2691
27-30
28420
2928
30-387
3130
322011
33-88
34153
3528
36-1894
3736
38190
39-182
408902
4140
42-3234
4342
442398
45-132
46276
4746
482340
4948
50-2678
51-510
524641
5352
54-1754
55-198
56108400

[-2,1,2,3,4,6,6,10,8,15,10,25,12,28,10,60,16,25,
 18,125,0,66,22,218,24,91,-30,420,28,-387,30,2011,
 -88,153,28,-1894,36,190,-182,8902,40,-3234,42,
 2398,-132,276,46,2340,48,-2678,-510,4641,52,-1754,
 -198,108400]