Numerators of cosecant numbers -2*(2^(2*n - 1) - 1)*Bernoulli(2*n); also of Bernoulli(2*n, 1/2) and Bernoulli(2*n, 1/4).

A001896

Numerators of cosecant numbers -2*(2^(2*n - 1) - 1)*Bernoulli(2*n); also of Bernoulli(2*n, 1/2) and Bernoulli(2*n, 1/4).

Terms

    a(0) =1a(1) =-1a(2) =7a(3) =-31a(4) =127a(5) =-2555a(6) =1414477a(7) =-57337a(8) =118518239a(9) =-5749691557a(10) =91546277357

External references