47624

Appears in sequences

• Number of connected labeled T_4-topologies with n points.at n=6A006058
• "AFK" (ordered, size, unlabeled) transform of 1,2,3,4,...at n=16A032007
• A functionally symmetric Polynomial as a triangle of coefficients: p(x,n)=If[n == 0, 1, (x + 1)^n + 2^(n - 2)*Sum[(3^(m-1) + 2*m-1 )*x^m*(1 + x^(n - 2*m)), {m, 1, n - 1}]].at n=37A146957
• A functionally symmetric Polynomial as a triangle of coefficients: p(x,n)=If[n == 0, 1, (x + 1)^n + 2^(n - 2)*Sum[(3^(m-1) + 2*m-1 )*x^m*(1 + x^(n - 2*m)), {m, 1, n - 1}]].at n=43A146957
• Expansion of (1+x-3*x^2) / ( 1-2*x-4*x^2+6*x^3 ).at n=11A271894