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A271802 as a simple table

na(n)
10
26
352
4614
516000
61114394
7220762028
8127074234622
9215163221802400
101080509693050320314
1116181730102294154610684
12725449589191165593072311582
1397631783799192329642727718567824
1439528641527526180063041016094650084850

[0,6,52,614,16000,1114394,220762028,127074234622,
 215163221802400,1080509693050320314,
 16181730102294154610684,
 725449589191165593072311582,
 97631783799192329642727718567824,
 39528641527526180063041016094650084850]