Sum of distinct products b_1*b_2*...*b_n where 1<=b_i<=n.

A321164

Sum of distinct products b_1*b_2*...*b_n where 1<=b_i<=n.

Terms

    a(0) =1a(1) =7a(2) =90a(3) =1441a(4) =38325a(5) =916714a(6) =37830100a(7) =1194352181a(8) =45241845825

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