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A245283 as a simple table

na(n)
11
21
31
41
52
66
748
82592
93421440
101952520007680
1179423772100432548659200
122433694280407609647520301298079459442688000
131731103819002733625504286414686785477293241305893841298989509923950758461440000

[1,1,1,1,2,6,48,2592,3421440,1952520007680,
 79423772100432548659200,
 2433694280407609647520301298079459442688000,
 17311038190027336255042864146867854772932413058938\
 41298989509923950758461440000]