13789440

Appears in sequences

• E.g.f. x*(1-2*x-2*x^2-sqrt(1-4*x-4*x^2))/ (2*(1+x)^2).at n=8A052744
• The number of positive integer sequences of length n with no duplicate substrings of length greater than 1, every number different from its neighbors, and a minimal product (= A282169(n)).at n=21A284434
• Triangle of numbers T(n,k) = (-1)^(n-k)*(n+1)!*Stirling2(n,k)/(k+1).at n=33A356857
• Expansion of e.g.f. 1/(1 + (log(1 - x^3))/x^2)^2.at n=9A375808