23094

Appears in sequences

• Expansion of susceptibility series related to Potts model.at n=5A007277
• Number of self-avoiding walks of length n on the Laves graph.at n=14A046944
• Number of trees with n nodes and 4 leaves.at n=43A055291
• Number of -n..n arrays x(0..4) of 5 elements with zero sum, adjacent elements differing by more than one, and elements alternately increasing and decreasing.at n=9A200194
• Expansion of Product_{k>0} (1 - x^k)^(2^(k-1)) in powers of x.at n=20A200751
• a(n) = 1 + n*binomial(2*n,n) - n^2*(n^2 - 2*n + 3)/2.at n=7A289720
• Number of different values of x_1*x_2*...*x_n where x_1=1 and x_i-x_{i-1} is 0 or 1.at n=18A334635
• Number of pairs (p,q) of partitions of n such that the set of parts in q is a subset of the set of parts in p.at n=20A369704