25896

Appears in sequences

• a(n) = 1728*n - 24.at n=14A157287
• Number of 3-step one or two space at a time bishop's tours on an n X n board summed over all starting positions.at n=23A187047
• Total number of corners in all partitions of n. A corner of a partition is a point of degree two in the corresponding Ferrers diagram.at n=27A265258
• Number of connected induced subgraphs in the n-sun graph.at n=7A287426
• a(n) is the least number k such that the sequence of elements of the abundancy index of k is palindromic with length n, or -1 if no such k exists.at n=12A349689
• G.f. A(x) satisfies A(x) = 1 + x + x*(1 + x)^3*A(x)^2.at n=7A366237
• a(n) is the number of 2n-celled fixed polyominoes with at least 180 degree rotational symmetry about the midpoint of a horizontal edge of a square in the lattice.at n=8A390654