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A174661 as a simple table

na(n)
01
11
24
315
482
5475
63456
726719
8239996
92313609
1024846640
11285861301
123586817928
1347988744115
14690525294018
1510547453864445
16171595180564816
172949836193259105
1853630566660122696
191025856767305899229
2020638503314068334480

[1,1,4,15,82,475,3456,26719,239996,2313609,
 24846640,285861301,3586817928,47988744115,
 690525294018,10547453864445,171595180564816,
 2949836193259105,53630566660122696,
 1025856767305899229,20638503314068334480]