53156

Appears in sequences

• a(n) = Sum_{d|n} binomial(n,d).at n=24A056045
• Number of positive meanders (walks starting at the origin and ending at any altitude > 0 that never touch or go below the x-axis in between) with n steps from {-4,-3,-2,-1,1,2,3,4}.at n=6A278396
• Number of integer partitions of n whose run-sums are not all equal.at n=42A382076
• Number of edges in a complete bipartite graph where the n vertices of each part are placed on the vertices, and on opposite sides, of a regular 2n-gon.at n=18A392973