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A039690 as a simple table

na(n)
11
22
35
410
520
625
750
8100
9125
10200
11250
12500
131000
141250
152000
162500
175000
1810000
1912500
2020000
2125000
2250000
23100000
24125000
25200000
26250000
27500000
281000000
291250000
302000000
312500000
325000000
3310000000
3412500000
3520000000
3625000000

[1,2,5,10,20,25,50,100,125,200,250,500,1000,1250,
 2000,2500,5000,10000,12500,20000,25000,50000,
 100000,125000,200000,250000,500000,1000000,
 1250000,2000000,2500000,5000000,10000000,12500000,
 20000000,25000000]