32506

Appears in sequences

• Number of espalier polycubes of a given volume in dimension 3.at n=33A229915
• a(1) = 1; a(n > 1) = Sum_{0 < k < n} (-1)^(n - k - 1) a(n - k) Sum_{d|k} a(d).at n=29A317853
• Number of compositions of n that are neither strictly increasing nor weakly decreasing.at n=16A337482
• Irregular table read by rows: T(n,k) is the number of k-gons, k>=3, formed inside a right triangle by the straight line segments mutually connecting all vertices and points on the two shorter edges whose positions on one edge equal the Farey series of order n while on the other they divide its length into n equal segments.at n=50A359977