Denominator of c(n) = 2^(2*n)*(2^(2*n) - 1)/(2*n)!, a coefficient used in the expansion of tan(x) as Sum_{n>=1} c(n)*|Bernoulli(2*n)|*x^(2*n-1).

A225846

Denominator of c(n) = 2^(2*n)*(2^(2*n) - 1)/(2*n)!, a coefficient used in the expansion of tan(x) as Sum_{n>=1} c(n)*|Bernoulli(2*n)|*x^(2*n-1).

Terms

    a(0) =1a(1) =1a(2) =1a(3) =5a(4) =21a(5) =4725a(6) =1485a(7) =14189175a(8) =42567525a(9) =516891375a(10) =11249435925

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