40638

Appears in sequences

• a(n) = A027082(n, 2n-4).at n=10A027091
• Number of independent subsets of nodes in graph formed from n-fold subdivision of triangle.at n=7A027740
• a(1)=1. a(n) = a(n-1) + (product of the earlier terms {among terms a(1) through a(n-1)} which are coprime to n).at n=6A127077
• Number of nXnXn triangular 0..2 arrays with no element equal to the product mod 3 of any two neighbors.at n=6A193367
• Number of distinct products of distinct factorials up to n!.at n=18A255937
• Number of regions formed when every pair of vertices of a regular n-gon are joined by an infinite line.at n=25A345025