a(n) = numerator( (-1)^(n-1)*H(2*n)/(2*n + 1) ), where H(n) is the n-th harmonic number.

A392689

a(n) = numerator( (-1)^(n-1)*H(2*n)/(2*n + 1) ), where H(n) is the n-th harmonic number.

Terms

    a(0) =0a(1) =1a(2) =-5a(3) =7a(4) =-761a(5) =671a(6) =-6617a(7) =1171733a(8) =-143327a(9) =751279a(10) =-55835135a(11) =830139a(12) =-269564591a(13) =34395742267a(14) =-10876020307a(15) =300151059037

External references