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A250608 as a simple table

na(n)
1247
2586
31153
42092
53691
66526
711749
821664
940879
1078610
11153289
12301780
13597811
141188838
152369773
164730440
179450487
1818889210
1937765201
2075515644
21151014907
22302011726
23604003573
241207985392
252415947071
264831868386

[247,586,1153,2092,3691,6526,11749,21664,40879,
 78610,153289,301780,597811,1188838,2369773,
 4730440,9450487,18889210,37765201,75515644,
 151014907,302011726,604003573,1207985392,
 2415947071,4831868386]