A260481 - OEIS

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A260481 as a simple table

n	a(n)
0	1
1	5
2	725
3	494613125
4	237200374061503726953125
5	57083011552674242150083383668890855252740781729278564453125

[1,5,725,494613125,237200374061503726953125, 57083011552674242150083383668890855252740781729278\ 564453125]