A093812 - OEIS

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A093812 as a simple table

n	a(n)
1	1
2	15
3	17
4	1680
5	421
6	56086995
7	9940915081637
8	31271643639794562523698024915
9	3090319883395626207270178075850946683940891639487741952
10	9721376888636052447184767296534734059409700304429485542107645657085305

[1,15,17,1680,421,56086995,9940915081637, 31271643639794562523698024915, 30903198833956262072701780758509466839408916394877\ 41952, 97213768886360524471847672965347340594097003044294\ 85542107645657085305]