247684

Appears in sequences

• a(n) = T(n,n+3), array T as in A050143.at n=8A050152
• T(n,k) is the number of order-decreasing and order-preserving partial transformations (of an n-chain) of waist k (waist(alpha) = max(Im(alpha))).at n=64A145035
• Number of nondecreasing -6..6 vectors of length n whose dot product with some nonincreasing -6..6 vector equals n.at n=8A226397