a(n) is the square of the number consisting of one 1 and n 6's: (166...6)^2.

A309827

a(n) is the square of the number consisting of one 1 and n 6's: (166...6)^2.

Terms

    a(0) =1a(1) =256a(2) =27556a(3) =2775556a(4) =277755556a(5) =27777555556

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