A139089 - OEIS

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A139089 as a simple table

n	a(n)
4	561
5	4435201
6	691891201
7	39520825344001
8	13516122267648001
9	2872446304320552960001
10	982417999304411328282624000001
11	913648739353102535302840320000001

[561,4435201,691891201,39520825344001, 13516122267648001,2872446304320552960001, 982417999304411328282624000001, 913648739353102535302840320000001]