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A047630 as a simple table

na(n)
11
228
340
4117
5135
6196
7200
8224
9496
10640
11775
12819
13891
141000
151372
161521
171550
181568
191701
201792
212176
222325
232480
243100
253159
263200
273375
283724
294455
305000
315632
325733
336200
346860
356875
366975
378128
389604
3910240
4010880
4110935
4210976
4311907

[1,28,40,117,135,196,200,224,496,640,775,819,891,
 1000,1372,1521,1550,1568,1701,1792,2176,2325,2480,
 3100,3159,3200,3375,3724,4455,5000,5632,5733,6200,
 6860,6875,6975,8128,9604,10240,10880,10935,10976,
 11907]