a(n) is the maximal permanent of an n X n symmetric matrix using all the integers from 0 to n*(n + 1)/2 - 1.

A358809

a(n) is the maximal permanent of an n X n symmetric matrix using all the integers from 0 to n*(n + 1)/2 - 1.

Terms

    a(0) =1a(1) =0a(2) =4a(3) =186a(4) =21823a(5) =4569098a(6) =1713573909

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