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A155302 as a simple table

na(n)
41
54
610
719
831
9129
10761
113423
1212503
1365847
14587331
155621100
1647590431
17445495212
185880381069
1998943434625
201748899641272
2132546795958370
22732964964303388

[1,4,10,19,31,129,761,3423,12503,65847,587331,
 5621100,47590431,445495212,5880381069,98943434625,
 1748899641272,32546795958370,732964964303388]