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A074826 as a simple table

na(n)
05
16
26
36
46
5-4
6-60
7-246
8-722
9-1758
10-3754
11-7144
12-11868
13-15646
14-9458
1532726
16174750
17555668
181446564
193310642
206788406
2112366066
2219107358
2321047904
24-1585148
25-101419654
26-400928730
27-1155269658
28-2838111242
29-6203242964
30-12144929980
31-20857830310
32-29087301442

[5,6,6,6,6,-4,-60,-246,-722,-1758,-3754,-7144,
 -11868,-15646,-9458,32726,174750,555668,1446564,
 3310642,6788406,12366066,19107358,21047904,
 -1585148,-101419654,-400928730,-1155269658,
 -2838111242,-6203242964,-12144929980,-20857830310,
 -29087301442]