a(n) is the smallest nonnegative integer k where exactly n ordered pairs of positive integers (x, y) exist such that x^2 + 3*x*y + y^2 = k.

A374091

a(n) is the smallest nonnegative integer k where exactly n ordered pairs of positive integers (x, y) exist such that x^2 + 3*x*y + y^2 = k.

Terms

    a(0) =0a(1) =5a(2) =11a(3) =605a(4) =209a(5) =73205a(6) =2299a(7) =8857805a(8) =6061a(9) =218405a(10) =278179

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