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A026057 as a simple table

na(n)
00
1-2
21
310
426
550
683
7126
8180
9246
10325
11418
12526
13650
14791
15950
161128
171326
181545
191786
202050
212338
222651
232990
243356
253750
264173
274626
285110
295626
306175
316758
327376
338030
348721
359450
3610218
3711026
3811875
3912766
4013700
4114678
4215701
4316770
4417886
4519050

[0,-2,1,10,26,50,83,126,180,246,325,418,526,650,
 791,950,1128,1326,1545,1786,2050,2338,2651,2990,
 3356,3750,4173,4626,5110,5626,6175,6758,7376,8030,
 8721,9450,10218,11026,11875,12766,13700,14678,
 15701,16770,17886,19050]