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A031858 as a simple table

na(n)
19949
210651
311131
411614
512511
613159
714431
814479
914557
1014974
1115679
1216486
1317086
1418244
1519249
1619849
1720989
1821019
1921217
2021849
2123158
2223781
2323869
2424511
2524652
2625089
2725117
2825468
2926188
3027337
3127549
3227967
3328129
3428591
3528597
3630718

[9949,10651,11131,11614,12511,13159,14431,14479,
 14557,14974,15679,16486,17086,18244,19249,19849,
 20989,21019,21217,21849,23158,23781,23869,24511,
 24652,25089,25117,25468,26188,27337,27549,27967,
 28129,28591,28597,30718]