52858

Appears in sequences

• T(n,1) + T(n,2) + ... T(n,n), where T is the array in A026098.at n=41A026101
• Number of permutations p of (1,2,3,...,n) such that k+p(k) is a triangular number for 1<=k<=n.at n=23A096901
• Number of simple connected graphs with n nodes that are Hamiltonian and have no subgraph isomorphic to the bowtie graph.at n=9A243545
• a(n) = n*(2*n - 3 - (-1)^n)*(11*n + (-1)^n)/24.at n=38A308026
• Number of polyominoes with n cells and exactly one line of reflection symmetry, where that one line is parallel to the grid and passes through the center of at least one square.at n=19A349328
• Expansion of g/(1 + x^3*g^3), where g = 1+x*g^4 is the g.f. of A002293.at n=7A391326