-3202291

Appears in sequences

• Numerators of Euler twin numbers Et(n).at n=18A238235
• Numerators of coefficients in expansion of (cos(sqrt(x)))/(1 + cos(sqrt(x))).at n=8A279370
• a(n) = (4^n*(Z(-n, 1/4) - Z(-n, 3/4)) + Z(-n, 1)*(2^(n+1)-1))*A171977(n+1), where Z(n, c) is the Hurwitz zeta function.at n=17A335955