18460
domain: N
Appears in sequences
- a(n) = Sum_{k=0..n} p(k) where p(k) = number of partitions of k (A000041).at n=28A000070
- Number of palindromic partitions of n.at n=56A025065
- Number of palindromic partitions of n.at n=57A025065
- Column 4 of A048790.at n=10A094160
- a(n) = 4*a(n-1) + (n-6)*a(n-2).at n=8A129997
- Number of 0..n arrays x(0..5) of 6 elements with zero 4th differences.at n=24A200084
- Values of y such that x^2 + y^2 = 29^n with x and y coprime and 0 < x < y.at n=5A230645
- G.f. satisfies: A(x + A(x)^2) = x + 2*A(x)^2.at n=9A277306
- The PI index of the Aztec diamond AZ(n) (see the Imran et al. reference).at n=4A292343
- Number of nonequivalent dissections of an n-gon into 3 polygons by nonintersecting diagonals rooted at a cell up to rotation.at n=39A295622
- Number of strict closure operators on a set of n elements such that every point and every closed set not containing that point can be separated by clopen sets.at n=5A358152
- a(n) = 2*n^3 - 3*n + 1.at n=21A377663