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A132506 as a simple table

na(n)
18
262
33975
420917752
58562976504189078
684016954682703911270453244419973
711652420874344144713949814659036182051896217268621851258316832616

[8,62,3975,20917752,8562976504189078,
 84016954682703911270453244419973,
 11652420874344144713949814659036182051896217268621\
 851258316832616]