110240

Appears in sequences

• a(n) = (n-1)*(2*n-1)*(3*n-1).at n=27A033594
• Number of n-node (unlabeled) graphs with girth 6.at n=12A128239
• G.f.: Product_{j>=1} 1/(1-x^j)^binomial(j+3,3).at n=9A255050
• Number of length n+2 0..3 arrays with at most one downstep in every n consecutive neighbor pairs.at n=11A258732
• Number of regions in a polygon whose boundary consists of n+2 equally spaced points around a semicircle and three equally spaced points along the diameter (a total of n+3 points). See Comments for precise definition.at n=38A333642
• Triangle read by rows: T(n,k) is the number of partitions of a 4-colored set of n objects into at most k parts with 0 <= k <= n.at n=54A382241