104825

Appears in sequences

• Number of equivalence classes of connected graphs on n nodes up to sequences of edge local complementation and isomorphism.at n=9A156800
• Number of positive walks with n steps {-4,-3,-2,-1,1,2,3,4} starting at the origin, ending at altitude 1, and staying strictly above the x-axis.at n=8A277922
• Numerator of 2*Sum_{k=0..n} binomial(n,k)^2*binomial(n+k,k)^2*(H(n+k)-H(n-k)) where H(n)=Sum_{k=1..n} 1/k.at n=4A334886