A067501 - OEIS

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A067501 as a simple table

n	a(n)
1	1
2	4
3	68719476736
4	95780971304118053647396689196894323976171195136475136
5	25108406941546723055343157692830665664409421777856138051584
6	1606938044258990275541962092341162602522202993782792835301376

[1,4,68719476736, 95780971304118053647396689196894323976171195136475\ 136, 25108406941546723055343157692830665664409421777856\ 138051584, 16069380442589902755419620923411626025222029937827\ 92835301376]