156072

Appears in sequences

• Matrix square of Stirling2 triangle A008277: 2-levels set partitions of [n] into k first-level subsets.at n=40A039810
• Triangle of generalized Stirling numbers of 2nd kind.at n=40A046817
• Square of the Stirling2 matrix A048993.at n=50A130191
• Number of regions formed in a square by straight line segments when connecting the n-1 points between each corner that divide each edge into n equal parts to the n-1 points on the edge on the opposite side of the square.at n=19A355798