Square numbers n for which sigma(n) - d(n) is also a perfect square.

A218484

Square numbers n for which sigma(n) - d(n) is also a perfect square.

Terms

    a(0) =1a(1) =4a(2) =1276900a(3) =7236100a(4) =9449476a(5) =69529779225a(6) =273137935876a(7) =275693254225

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