a(n) = 5^(2*n) * [x^n] Product_{k>=1} (1 + 2*x^k)^(1/5).

A370737

a(n) = 5^(2*n) * [x^n] Product_{k>=1} (1 + 2*x^k)^(1/5).

Terms

    a(0) =1a(1) =10a(2) =50a(3) =14750a(4) =-166250a(5) =14011250a(6) =-133418750a(7) =18136968750a(8) =-620089531250

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