8589934559

Appears in sequences

• a(n) = 2^(2*n+1)*Sum_{k=1..2*n} binomial(2*n+1,k)*Bernoulli(k)/2^k.at n=15A069993
• a(n) = Numerator of (0 followed by 1's) - n/2^n.at n=33A273153