23748

Appears in sequences

• Expansion of a modular function.at n=23A006707
• a(n) = 5*a(n-1) - 6*a(n-2) + a(n-3), with a(0)=1, a(1)=3, a(2)=8.at n=9A215512
• Number of inversions in all Dyck prefixes of length n.at n=13A221058
• Expansion of Product_{k>=1} (1 + 3*x^k) / (1 - x^k).at n=16A266821
• Decimal representation of the x-axis, from the origin to the right edge, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 539", based on the 5-celled von Neumann neighborhood.at n=14A282983
• a(n) = Sum_{k=1..n} (-1)^(k+1) * floor(n/(2*k-1))^3.at n=28A350163