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A117508 as a simple table

na(n)
13
221
33003
4969969
5872002131
61537339756953
75532885785273847
828676947025074349001
9298326279901848452657403
103479379402495258503343291189
1166257821961717207679166294112127

[3,21,3003,969969,872002131,1537339756953,
 5532885785273847,28676947025074349001,
 298326279901848452657403,
 3479379402495258503343291189,
 66257821961717207679166294112127]