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A081975 as a simple table

na(n)
13
26
310
445
536
628
791
878
966
10231
11210
12120
13276
141035
15630
16378
171431
181378
19780
20990
21528
22496
23465
24300
25820
263321
273240
282080
295356
305253
311275
321225
331176
341128
354371
364278
374186
385460
394560
4011476
4111325
422775
43666
442016
4512880
466555
471596

[3,6,10,45,36,28,91,78,66,231,210,120,276,1035,
 630,378,1431,1378,780,990,528,496,465,300,820,
 3321,3240,2080,5356,5253,1275,1225,1176,1128,4371,
 4278,4186,5460,4560,11476,11325,2775,666,2016,
 12880,6555,1596]