150707

Properties

Appears in sequences

• Number of permutations that are 3 "block reversals" away from 12...n.at n=9A007975
• Number of self-avoiding paths along the edges of a grid with n X n square cells, which do not pass above the diagonal. The paths start at the lower left corner and finish at the upper right corner.at n=7A340005
• Prime numbersat n=13908