28786

Appears in sequences

• Numbers k such that the continued fraction for sqrt(k) has period 81.at n=35A020420
• Number of possible outcomes after n steps of the Zeno gambling process.at n=25A137414
• Number of (w,x,y) with all terms in {0,...,n} and the numbers w,x,y,|w-x|,|x-y| distinct.at n=33A213490
• Number of simple labeled graphs G on n vertices such that for each k in {1,2,...,n}, G has exactly k connected components and the vertices labeled with {1,2,...,k} are all in different components.at n=5A275597
• Number of maximal irredundant sets in the n-web graph.at n=7A291105
• a(n) = coefficient of x^n in A(x) such that x^2 = Sum_{n=-oo..+oo} x^(n*(3*n+1)/2) * (A(x)^(3*n) - 1/A(x)^(3*n+1)).at n=10A359919