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A138827 as a simple table

na(n)
12
24
37
410
519
625
719
837
982
10115
11142
12172
13745
14856
151603
162980
173079
184240
195812
205842
2113165
2213480
2315136
2427052
2529455
2631339
2760112
28116386
29149239
30179821
31291511
321025683
331164760
341703224
351891861
364038604
374091767
389440575
3918241120
4028450837
4132576617

[2,4,7,10,19,25,19,37,82,115,142,172,745,856,1603,
 2980,3079,4240,5812,5842,13165,13480,15136,27052,
 29455,31339,60112,116386,149239,179821,291511,
 1025683,1164760,1703224,1891861,4038604,4091767,
 9440575,18241120,28450837,32576617]