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A003844 as a simple table

na(n)
123499295948800
22579025599882610278400
31154606796534757164318720000
427230655539587500000000000000000
5104772288945650279285144527564308480000
642863636354909175368011800612065142374400

[23499295948800,2579025599882610278400,
 1154606796534757164318720000,
 27230655539587500000000000000000,
 104772288945650279285144527564308480000,
 42863636354909175368011800612065142374400]