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A115520 as a simple table

na(n)
01
12
25
312
423
536
661
788
8123
9170
10227
11288
12373
13462
14565
15688
16827
17972
181153
191340
201547
211782
222039
232304
242617
252938
263285
273668
284079
294500
304981
315472
325995
336562
347163
357776
368461
379158
389893
3910680
4011507
4112348
4213273
4314212
4415195
4516238
4617327
4718432
4819633

[1,2,5,12,23,36,61,88,123,170,227,288,373,462,565,
 688,827,972,1153,1340,1547,1782,2039,2304,2617,
 2938,3285,3668,4079,4500,4981,5472,5995,6562,7163,
 7776,8461,9158,9893,10680,11507,12348,13273,14212,
 15195,16238,17327,18432,19633]