-5221

Appears in sequences

• Numerators of the expansion of -W_{-1}(-e^(-1 - x^2/2)) where x > 0 and W_{-1} is the Lambert W function.at n=12A005447
• Numerators of SGGS((2*n+1)/2^(n+1)) where the rational numbers SGGS(n) are defined in A264148.at n=5A264150
• Numerators of coefficients in S(x) where: C(x)^(1/2) - S(x)^(1/2) = 1 such that C'(x)*S(x)^(1/2) = S'(x)*C(x)^(1/2) = 2*x*C(x).at n=14A299432