50485

Appears in sequences

• Number of intersection points of all lines through pairs of vertices of a regular n-gon.at n=25A146212
• Number of permutations of 1..n with displacements restricted to {-7,-6,-5,-4,-3,-2,0,1}.at n=20A189600
• Number of binary arrays indicating the locations of trailing edge maxima of a random length-n 0..6 array extended with zeros and convolved with 1,3,3,1.at n=22A222025
• A146212(2*n).at n=12A347321
• Number of vertices in graph G_n formed by taking a regular n-gon with all its chords extended to infinity (the n-th graph in A344857) and inverting it in its circumscribing circle.at n=25A383461