90272

Appears in sequences

• Expansion of x^3*(x-1)*(x+1) / (x^5-2*x^4+x^2-1).at n=49A135990
• Irregular triangle read by rows: first row is 1, and the n-th row gives the coefficients in the expansion of (1/2*x)*(1 - 2*x*(1 - x))^(n + 1)*Li(-n, 2*x*(1 - x)), where Li(n, z) is the polylogarithm.at n=49A142147
• Largest members of fully k-sociable cycles of order r.at n=21A183023
• Conjectured list of fully multisociable numbers.at n=40A183029
• Irregular triangle read by rows: T(n,k) is the number of n-permutations whose second-longest cycle has length exactly k; n>=0, 0<=k<=floor(n/2).at n=28A349979
• Let S(n)=sigma(n)/3. Numbers k such that S^m(k)=k, 1/3-sociable numbers (of any order).at n=16A356548